EN 71-4:2020

Safety of toys - Part 4: Experimental sets for chemistry and related activities

This document specifies requirements for the maximum amount, and in some cases, the maximum concentration of certain substances and mixtures used in experimental sets for chemistry and related activities.
These substances and mixtures are:
-   those classified as hazardous by the EC-legislation applying to hazardous substances and hazardous mixtures [1];
-   substances and mixtures which in excessive amounts could harm the health of the children using them and which are not classified as hazardous by the above-mentioned legislation; and
-   any other chemical substance(s) and mixture(s) delivered with the experimental set.
This document applies to experimental sets for chemistry and related activities including crystal growing sets, carbon dioxide generating experimental sets and supplementary sets. It also covers sets for chemical experiments within the fields of mineralogy, biology, physics, microscopy and environmental science whenever they contain one or more chemical substances and/or mixtures which are classified as hazardous according to Regulation (EC) No. 1272/2008 [1].
This document also specifies requirements for marking, a contents list, instructions for use, eye protection and for the equipment intended for carrying out the experiments.
This document does not apply to combined sets, e.g. a combination of a chemistry set and a crystal growing set. It also does not apply to toys that are covered by EN 71-13 (e.g. cosmetic kits). Requirements for certain other chemical toys are given in EN 71-5.
NOTE   The terms "substance" and "preparation", are used in the "REACH Regulation", Regulation (EC) No. 1907/2006 [2]. According to the Globally Harmonized System (GHS) of classification and labelling of chemicals, which in the European Union has been enacted by Regulation (EC) No. 1272/2008 (classification, labelling and packaging of substances and mixtures) [1], the timetable for the introduction of GHS is followed. The words "preparation" and "mixture" are considered synonymous; both are a mixture or solution of substances that do not react with each other. The old term "preparation" will be replaced by the new term "mixture" in due course. In this document, only the term "mixture" is used.

Sicherheit von Spielzeug - Teil 4: Experimentierkästen für chemische und ähnliche Versuche

Dieses Dokument legt Anforderungen an die Höchstmengen und, in einigen Fällen, an die Höchstkonzen-trationen bestimmter Stoffe und Gemische fest, die in Experimentierkästen für chemische und ähnliche Ver-suche verwendet werden.
Bei diesen Stoffen und Gemischen handelt es sich um:
—   solche, die nach den für gefährliche Stoffe und gefährliche Gemische geltenden EU Rechtsvorschriften [1] als gefährlich eingestuft sind;
—   Stoffe und Gemische, die in übermäßigen Mengen die Gesundheit der Kinder, die sie verwenden, schädigen könnten und die nicht durch die vorstehend genannten Rechtsvorschriften als gefährlich eingestuft sind; und
—   sonstige chemische Stoffe und Gemische, die in einem Experimentierkasten enthalten sind.
Dieses Dokument gilt für Experimentierkästen für chemische und ähnliche Versuche, einschließlich Experimentierkästen zur Kristallzucht und Experimentierkästen zur Erzeugung von Kohlenstoffdioxid sowie Ergänzungskästen. Es umfasst außerdem Experimentierkästen mit chemischen Versuchen auf dem Gebiet der Mineralogie, Biologie, Physik, Mikroskopie und der Umweltwissenschaften, sofern diese einen oder mehrere chemische Stoffe und/oder Gemische enthalten, die nach der Verordnung (EG) Nr. 1272/2008 [1] als gefährlich eingestuft sind.
Darüber hinaus legt dieses Dokument Anforderungen an die Kennzeichnung, die Inhaltsangabe, die Ge-brauchsanleitung, den Augenschutz und an die zur Durchführung der Versuche zu verwendende Ausrüstung fest.
Dieses Dokument gilt nicht für kombinierte Experimentierkästen, z. B. eine Kombination aus einem Chemie-experimentierkasten und einem Experimentierkasten zur Kristallzucht. Ferner gilt es nicht für Spielzeug, das in EN 71 13 behandelt wird (z. B. Kosmetik Sets). Anforderungen an bestimmte andere chemische Spielzeuge sind in EN 71 5 enthalten.
ANMERKUNG   Die Begriffe „Stoff“ und „Zubereitung“ werden in der „REACH Verordnung“, Verordnung (EG) Nr. 1907/2006 [2], verwendet. Nach dem Global Harmonisierten System (GHS) zur Einstufung und Kennzeichnung von Chemikalien, das in der Europäischen Union durch die Verordnung (EG) Nr. 1272/2008 (Einstufung, Kennzeichnung und Verpackung von Stoffen und Gemischen) [1] erlassen wurde, wird der Zeitplan für die Einführung des GHS eingehalten. Die Wörter „Zubereitung“ und „Gemisch“ werden als Synonyme betrachtet; beides sind Gemische oder Lösungen aus Stoffen, die nicht miteinander reagieren. Der veraltete Begriff „Zubereitung“ wird zu gegebener Zeit durch den neuen Begriff „Gemisch“ ersetzt. In diesem Dokument wird ausschließlich der Begriff „Gemisch“ verwendet.

Sécurité des jouets - Partie 4 : Coffrets d’expériences chimiques et d’activités connexes

Le présent document spécifie les exigences relatives à la quantité maximale et, dans certains cas, à la concentration maximale de certaines substances et de certains mélanges utilisés dans les coffrets d’expériences chimiques et d’activités connexes.
Ces substances et mélanges sont les suivants :
-   ceux classés comme dangereux par la législation de l’UE s’appliquant aux substances dangereuses et aux mélanges dangereux [1] ;
-   des substances et mélanges qui, en quantités excessives, pourraient être néfastes pour la santé des enfants les utilisant, mais qui ne sont pas classés comme dangereux par la législation susmentionnée ; et
-   toute autre substance et tout autre mélange chimiques fournis avec le coffret d’expériences.
Le présent document s’applique aux coffrets d’expériences chimiques et d’activités connexes, y compris les coffrets de développement de cristaux, les coffrets d’expériences produisant du dioxyde de carbone et les coffrets additionnels. Il couvre également les coffrets permettant de faire des expériences chimiques dans les domaines de la minéralogie, de la biologie, de la physique, de la microscopie et des sciences de l’environnement, lorsqu’ils contiennent une ou plusieurs substances et/ou un ou plusieurs mélanges chimiques qui sont classés comme dangereux conformément au Règlement (CE) n° 1272/2008 [1].
Le présent document spécifie également des exigences relatives au marquage, à la liste des informations, à la notice d’utilisation, à l’équipement de protection des yeux et au matériel destiné à être utilisé pour réaliser les expériences.
Le présent document ne s’applique pas aux coffrets combinés, par exemple la combinaison d’un coffret de chimie et d’un coffret de développement de cristaux. Le présent document ne s’applique pas non plus aux jouets couverts par l’EN 71-13 (par exemple, jeux cosmétiques). Les exigences relatives à certains autres jouets chimiques sont données dans l’EN 71-5.
NOTE   Les termes « substance » et « préparation » sont utilisés dans le « Règlement REACH », Règlement (CE) n° 1907/2006 [2]. Conformément au Système général harmonisé de classification et d’étiquetage des produits chimiques (SGH), qui a été adopté au sein de l’Union européenne via le Règlement (CE) n° 1272/2008 (classification, étiquetage et emballage des substances et des mélanges) [1], le calendrier pour l’introduction du SGH est suivi. Les termes « préparation » et « mélange » sont considérés comme des synonymes ; les deux concernent des mélanges ou des solutions de substances qui ne réagissent pas les unes avec les autres. L’ancienne dénomination « préparation » sera remplacée par le nouveau terme « mélange » en temps opportun. Dans le présent document, seul le terme « mélange » est employé.

Varnost igrač - 4. del: Kompleti za kemijske poskuse in druge poskuse, pri katerih se uporabljajo kemikalije

General Information

• Status: Withdrawn
• Publication Date: 22-Dec-2020
• Withdrawal Date: 13-Apr-2025
• ICS: 97.200.50 - Toys
• Technical Committee: CEN/TC 52 - Safety of toys
• Drafting Committee: CEN/TC 52/WG 5 - Safety of toys - Chemical toys
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 02-Apr-2025
• Completion Date: 14-Apr-2025
• Directive: 2009/48/EC - DIRECTIVE 2009/48/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 18 June 2009 on the safety of toys
• Mandate: M/445 - Standardisation mandate addressed to CEN and CENELEC within the framework of Directive 2009/48/EC revising Directive 88/378/EEC concerning the safety of Toys
• Ref Project: SIST EN 71-4:2021 - Safety of toys - Part 4: Experimental sets for chemistry and related activities

Relations

• Replaces: EN 71-4:2013 - Safety of toys - Part 4: Experimental sets for chemistry and related activities
• Effective Date: 19-Dec-2018
• Merged Into: EN 71-4:2020+A1:2025 - Safety of toys - Part 4: Experimental sets for chemistry and related activities
• Effective Date: 22-Jan-2025
• Amended By: EN 71-4:2020/prA1 - Safety of toys - Part 4: Experimental sets for chemistry and related activities
• Effective Date: 21-Dec-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2021
Nadomešča:
SIST EN 71-4:2013
Varnost igrač - 4. del: Kompleti za kemijske poskuse in druge poskuse, pri katerih
se uporabljajo kemikalije
Safety of toys - Part 4: Experimental sets for chemistry and related activities
Sicherheit von Spielzeug - Teil 4: Experimentierkästen für chemische und ähnliche
Versuche
Sécurité des jouets - Partie 4: Coffrets d'expériences chimiques et d'activités connexes
Ta slovenski standard je istoveten z: EN 71-4:2020
ICS:
97.200.50 Igrače Toys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 71-4
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 97.200.50 Supersedes EN 71-4:2013
English Version
Safety of toys - Part 4: Experimental sets for chemistry and
related activities
Sécurité des jouets - Partie 4 : Coffrets d'expériences Sicherheit von Spielzeug - Teil 4: Experimentierkästen
chimiques et d'activités connexes für chemische und ähnliche Versuche
This European Standard was approved by CEN on 11 October 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 71-4:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Chemical substances in experimental sets . 9
4.1 Chemistry sets . 9
4.1.1 Inclusion in the chemistry set. 9
4.1.2 Inclusion for experiments (as mentioned in the instructions but not supplied in the
chemistry set) . 10
4.1.3 Requirements for packaging in containers . 10
4.2 Crystal growing sets . 14
4.3 Carbon dioxide generating experimental sets . 17
5 Equipment . 18
5.1 General requirements . 18
5.2 Containers and glassware . 19
5.2.1 Test tubes . 19
5.2.2 Other glassware . 19
5.2.3 Containers for reagents, substances and mixtures . 19
5.2.4 Packaging and closures . 20
5.2.5 Empty containers . 21
5.2.6 Test method for borosilicate glass . 21
5.3 Equipment for the transfer of liquid . 22
5.4 Test tube stand and test tube holder . 22
5.5 Eye protection . 23
6 Marking . 23
6.1 General requirements . 23
6.2 Marking of individual containers, packaging and glassware . 23
6.3 Marking of the primary packaging . 24
6.3.1 The primary packaging shall bear the following warnings: . 24
6.3.2 Supplementary sets shall additionally be marked with the following warning on the
primary packaging . 24
7 Contents list with warnings and first aid information . 24
8 Instructions for use . 25
8.1 General instructions. 25
8.2 Advice for supervising adults . 26
8.3 Safety rules . 26
8.3.1 Chemistry sets . 26
8.3.2 Crystal growing sets . 27
8.3.3 Carbon dioxide generating experimental sets . 28
Annex A (informative) Rationale . 29
A.1 Classification of substances and mixtures . 29
A.2 Crystal growing sets . 29
A.3 Carbon dioxide generating experimental sets . 29
A.4 Combined sets . 30
A.5 Use of substances/mixtures not provided with a chemistry set . 30
A.6 Markings, labelling and warnings . 30
Annex B (informative) Environmental considerations . 31
Annex C (informative) Significant technical changes between this document and the
previous version . 32
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of Directive 2009/48/EC aimed to be covered . 33
Bibliography . 34

European foreword
This document (EN 71-4:2020) has been prepared by Technical Committee CEN/TC 52 “Safety of toys”,
the secretariat of which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by June 2021, and conflicting national standards shall be
withdrawn at the latest by December 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 71-4:2013.
The significant changes from the previous edition of this document are detailed in Annex C.
Additional information on the background and rationale for various requirements are given in Annex A.
This document constitutes the fourth part of the EN 71 series of standards on safety of toys.
EN 71, Safety of toys, consists of the following parts:
— Part 1: Mechanical and physical properties
— Part 2: Flammability
— Part 3: Migration of certain elements
— Part 4: Experimental sets for chemistry and related activities (the present document)
— Part 5: Chemical toys (sets) other than experimental sets
— Part 7: Finger paints — Requirements and test methods
— Part 8: Activity toys for domestic use
— Part 9: Organic chemical compounds — Requirements
— Part 10: Organic chemical compounds — Sample preparation and extraction
— Part 11: Organic chemical compounds — Methods of analysis
— Part 12: N-Nitrosamines and N-nitrosatable substances
— Part 13: Olfactory board games, cosmetic kits and gustative games
— Part 14: Trampolines for domestic use
NOTE 1 In addition to the above parts of EN 71, the following guidance documents have been published:
— CEN/TR 15071, Safety of toys — National translations of warnings and instructions for use in the EN 71
series,
— CEN/TR 15371 (all parts), Safety of toys — Interpretations,
— CEN/TR 16918, Safety of toys — Children's mouthing behaviour in contact with toys, and
— CEN ISO/TR 8124-8, Safety of toys — Part 8: Age determination guidelines.
NOTE 2 Words in italics (apart from document titles) are defined in Clause 3 (Terms and definitions).
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive 2009/48/EC.
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Introduction
This document is intended to reduce the risks and health hazards to a child when experimental sets
involving chemical experiments are used as intended or in a foreseeable way, bearing in mind the
behaviour of children.
During use of these experimental sets, the hazards should be kept to a minimum by the provision of
appropriate information to make the experiments safe and controllable. Therefore, this document
specifies warning phrases and instructions for use for experimental sets.
As a general rule, experimental sets are designed and manufactured for particular ages of children. Their
characteristics are related to the age and stage of development of the children, and their use
presupposes certain aptitudes. Age requirements are therefore given.
The requirements of this document do not release parents or carers from their responsibility of
watching over the child while he or she is carrying out experiments. On the contrary, the use of these
sets requires close supervision by adults.
1 Scope
This document specifies requirements for the maximum amount, and in some cases, the maximum
concentration of certain substances and mixtures used in experimental sets for chemistry and related
activities.
These substances and mixtures are:
— those classified as hazardous by the EC-legislation applying to hazardous substances and hazardous
mixtures [1];
— substances and mixtures which in excessive amounts could harm the health of the children using
them and which are not classified as hazardous by the above-mentioned legislation; and
— any other chemical substance(s) and mixture(s) delivered with the experimental set.
This document applies to experimental sets for chemistry and related activities including crystal
growing sets, carbon dioxide generating experimental sets and supplementary sets. It also covers sets for
chemical experiments within the fields of mineralogy, biology, physics, microscopy and environmental
science whenever they contain one or more chemical substances and/or mixtures which are classified
as hazardous according to Regulation (EC) No. 1272/2008 [1].
This document also specifies requirements for marking, a contents list, instructions for use, eye
protection and for the equipment intended for carrying out the experiments.
This document does not apply to combined sets, e.g. a combination of a chemistry set and a crystal
growing set. It also does not apply to toys that are covered by EN 71-13 (e.g. cosmetic kits).
Requirements for certain other chemical toys are given in EN 71-5.
NOTE The terms “substance” and “preparation”, are used in the “REACH Regulation”, Regulation (EC) No.
1907/2006 [2]. According to the Globally Harmonized System (GHS) of classification and labelling of chemicals,
which in the European Union has been enacted by Regulation (EC) No. 1272/2008 (classification, labelling and
packaging of substances and mixtures) [1], the timetable for the introduction of GHS is followed. The words
“preparation” and “mixture” are considered synonymous; both are a mixture or solution of substances that do not
react with each other. The old term “preparation” will be replaced by the new term “mixture” in due course. In this
document, only the term “mixture” is used.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 71-1:2014+A1:2018, Safety of toys - Part 1: Mechanical and physical properties
EN 71-5:2015, Safety of toys - Part 5: Chemical toys (sets) other than experimental sets
EN 862:2016, Packaging - Child-resistant packaging - Requirements and testing procedures for non-
reclosable packages for non-pharmaceutical products
EN ISO 8317:2015, Child-resistant packaging - Requirements and testing procedures for reclosable
packages (ISO 8317:2015)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
chemical toy
toy intended for the direct handling of chemical substances and mixtures and which is used in a manner
appropriate to a given age-group and under the supervision of an adult
3.2
experimental set
chemical toy where the experimental and explorative character in playing with single chemical
substances and mixtures along strict instructions dominates over the creative ideas of the user
3.3
chemistry set
experimental set consisting of one or more chemical substances and/or mixtures with or without
equipment intended for carrying out chemical experiments
Note 1 to entry: The definition also covers experimental sets for chemical experiments within the fields of
mineralogy, biology, physics, microscopy and environmental sciences whenever they contain one or more
chemical substances and/or mixtures which are classified as hazardous according to Regulation (EC) No.
1272/2008, excluding crystal growing sets and carbon dioxide generating experimental sets.
3.4
crystal growing set
experimental set consisting of one or more chemical substances for growing crystals without any
reaction between the supplied substances
Note 1 to entry: A crystal growing set is used to grow crystals of different substances in aqueous solutions. The
crystals may be grown on different materials (e.g. stones or gypsum) and can be coloured in different ways (e.g.
with food colours): The expanding nature of the growing crystal is not subject to requirements within
EN 71-1:2014+A1:2018 for expanding materials as the expansion is not related to the absorption of water in the
crystal and the expansion usually takes place over a long period of time (several days or weeks).
3.5
carbon dioxide generating experimental set
experimental set consisting mainly of a carbon dioxide-donor substance or mixture and a carbon
dioxide-liberating substance or mixture which after combination generate carbon dioxide in the
presence of water in an open system without any gas-tight restriction or confinement
Note 1 to entry: The set is used to carry out and observe chemical reactions where there is no intention to
generate carbon dioxide in order to demonstrate speed, velocity or noise.
3.6
supplementary set
incomplete experimental set which is intended to be used with a complete experimental set
3.7
cosmetic kit
toy, the purpose of which is to assist a child to learn to make products such as fragrances, soaps, creams,
shampoos, bath foams, glosses, lipsticks, other make-up, toothpaste and conditioners
[SOURCE: EN 71-13:— , 3.2]
4 Chemical substances in experimental sets
4.1 Chemistry sets
4.1.1 Inclusion in the chemistry set
The chemical substances, mixtures and indicators given in Table 1 and Table 2 may be supplied in
chemistry sets or in a supplementary set for a chemistry set up to the amounts and concentrations
specified in those tables.
The quality of the chemicals used should be appropriate for the experiments described. In particular,
the chemicals should not contain impurities or substances that allow undefined and dangerous
reactions to occur.
Furthermore, colorants and colouring materials which are not specified in Table 2 may be supplied in
chemistry sets if they do not react with the substances and mixtures of the set and if they do not fulfil the
criteria of any of the following hazard classes:
— “acute toxicity” (hazard class 3.1),
— “skin corrosion/irritation” (hazard class 3.2),
— “serious eye damage/eye irritation” (hazard class 3.3),
— “respiratory or skin sensitisation” (hazard class 3.4),
— “germ cell mutagenicity” (hazard class 3.5),
— “carcinogenicity” (hazard class 3.6),
— “reproductive toxicity” (hazard class 3.7),
— “specific target organ toxicity — single exposure” (hazard class 3.8),
— “specific target organ toxicity — repeated exposure” (hazard class 3.9),
— “aspiration hazard” (hazard class 3.10).
Colorants which are permitted for use in food or cosmetics may be provided.
NOTE 1 The classification is detailed in Regulation (EC) No. 1272/2008 (Annex I, Part 3: Health Hazards).
Besides the chemical substances, mixtures and indicators given in Table 1 and Table 2 and colorants
and colouring materials, only food additives and their mixtures (see Regulation (EC) 1333/2008 [5])

Under preparation. Stage at the time of publication: FprEN 71-13.
may be supplied in chemistry sets, if pure food additives are not classified as hazardous substances [1]
or mixtures are not classified as hazardous mixtures [1].
NOTE 2 Samples of rocks, stones, minerals on which to perform experiments in order to distinguish their
composition are sometimes supplied with the set.
4.1.2 Inclusion for experiments (as mentioned in the instructions but not supplied in the
chemistry set)
The use of reagents listed in Table 3 may be suggested in the instructions at concentrations not
exceeding those specified in this table. The substances specified in Table 3 shall not be supplied in a
chemistry set.
Apart from its presence in tincture of iodine, denatured alcohol (ethanol) shall not be supplied in a
chemistry set. However, where experiments contained in the instructions of a chemistry set require it,
the use of denatured alcohol may be suggested in the instructions.
The instructions for use may suggest the use of other substances that are not classified as hazardous
substances [1] or mixtures that are not classified as hazardous mixtures [1] (e.g. sucrose, table sugar,
starch or flour).
4.1.3 Requirements for packaging in containers
The substances and mixtures in Table 1 and 2 in a chemistry set or in a supplementary set of a chemistry
set shall be supplied in containers (see 5.2.3) which are provided with closures (see 5.2.4.1).
Table 1 — Maximum amounts of chemical substances and mixtures for chemistry sets and
labelling
Chemical Max. GHS Signal word CAS EINECS INDEX
substance/mixture amount Pictograms number number number
per set (see Figure 1)
Aluminium potassium 10 g − − 10043–67– 233–141– −
sulfate 1 3
Ammonium carbonate 5 g GHS07 Warning 10361–29– 233–786– −
2 0
Ammonium chloride 30 g GHS07 Warning 12125–02– 235–186– 017–014–
9 4 00–8
Ammonium iron (III) 10138–04– 233–382–
5 g GHS05 Danger −
sulfate 2 4
Ammonium sodium 13011–54– 235–860–
5 g − − −
hydrogen phosphate 6 8
207–439–
Calcium carbonate 100 g − − 471–34–1 −
Calcium chloride 10 g GHS07 Warning 10043–52– 233–140– 017–013–
4 8 00–2
a 20 g GHS05, GHS07 Danger 1305–62–0 215–137– −
Calcium hydroxide
Calcium nitrate 5 g GHS03, GHS05, Danger 10124–37– 233–332– −
GHS07 5 1
a 10 g GHS05, GHS07 Danger 1305–78–8 215–138– −
Calcium oxide
Calcium sulfate 100 g − − 7778–18–9 231–900– −
b 100 g − − 7440–44–0 231–153– −
Charcoal
Chemical Max. GHS Signal word CAS EINECS INDEX
substance/mixture amount Pictograms number number number
per set (see Figure 1)
201–069–
Citric acid 20 g GHS07 Warning 77–92–9 −
Copper sheet 100 g − − 7440–50–8 231–159– −
Copper (II) oxide 10 g GHS07, GHS09 Warning 1317–38–0 215–269– 029–016–
1 00–6
Copper (II) sulfate 15 g GHS05, GHS07, Danger 7758–98–7 231–847– 029–004–
GHS09 6 00–0
Disodium disulfite 10 g GHS05, GHS07 Danger 7681–57–4 231–673– 016–063–
0 00–2
Glycerol (containing at 25 g − − 56–81–5 200–289– −
least 15 % water) 5
Hexamethylene- 10 g GHS02, GHS07 Warning 100–97–0 202–905– 612–101–
b 8 00–2
tetramine (solid fuel)
b 100 g GHS02 Warning 7439–89–6 231–096– −
Iron fillings
b 100 g GHS02 Danger 7439–89–6 231–096– −
Iron powder
Iron (III) chloride 10 g GHS05, GHS07 Danger 7705–08–0 231–729– −
Iron (II) sulfate 10 g GHS07 Warning 7720–78–7 231–753– 026–003–
5 00–7
Lactose 100 g − − 63–42–3 200–559– −
Lead-free solder 100 g − − − − −
Magnesium strip 3 g GHS02 Warning 7439–95–4 231–104– 012–001–
6 00–3
Magnesium sulfate 25 g − − 7487–88–9 231–298– −
Manganese (IV) dioxide 5 g GHS07, GHS08 Danger 1313–13–9 215–202– 025–001–
6 00–3
Manganese (II) sulfate 15 g GHS05, GHS08, Danger 7785–87–7 232–089– 025–003–
GHS09 9 00–4
Ninhydrin 1 g GHS07 Warning 485–47–2 207–618– −
Pepsin A 10 g GHS07, GHS08 Danger 9001–75–6 232–629– 647–008–
3 00–6
231–830–
Potassium bromide 15 g GHS07 Warning 7758–02–3 −
Potassium 13746–66– 237–323–
10 g GHS07 Warning −
b 2 3
hexacyanoferrate (III)
Potassium 10 g − − 13943–58– 237–722– −
b 3 2
hexacyanoferrate (II)
Potassium iodide 10 g GHS08 Danger 7681–11–0 231–659– −
Potassium 15 g GHS03, GHS07, Danger 7722–64–7 231–760– 025–002–
c GHS08, GHS09 3 00–9
permanganate
Chemical Max. GHS Signal word CAS EINECS INDEX
substance/mixture amount Pictograms number number number
per set (see Figure 1)
Potassium GHS03, GHS07,
10 g Danger − − −
permanganate: sodium GHS08, GHS09
sulfate mixture (1:2)
(mass fraction)
Silver nitrate 10 ml GHS05, GHS07, Warning 7761–88–8 231–853– 047–001–
(0,01 g/ml mass GHS09 9 00–2
concentration aqueous
solution)
Sodium acetate 20 g − − 127–09–3 204–823– −
Sodium carbonate 50 g GHS07 Warning 497–19–8 207–838– 011–005–
8 00–2
Sodium chloride 100 g − − 7647–14–5 231–598– −
Sodium hydrogen 50 g − − 144–55–8 205–633– −
carbonate 8
Sodium hydrogen 30 g GHS05 Danger 7681–38–1 231–665– 016–046–
sulfate 7 00-X
Sodium silicate 100 ml GHS05 Danger 1344–09–8 215–687– −
solution 4
(SiO :Na O > 2)
2 2
231–820–
Sodium sulfate 100 g − − 7757–82–6 −
Sodium thiosulfate 50 g − − 7772–98–7 231–867– −
231–722– 016–094–
Sulfur 15 g GHS07 Warning 7704–34–9
6 00–1
Tannin 15 g − − 1401–55–4 215–753– −
Tartaric acid 20 g GHS05 Danger 87–69–4 201–766– −
Tin (II) chloride 15 g GHS05, GHS07, Danger 7772–99–8 231–868– −
GHS08, GHS09 0
b 10 ml GHS02, GHS07, Danger 7553–56–2 231–442– 053–001–
Tincture of iodine
GHS08 4 003
(0,025 g/ml mass
concentration
d
ethanolic solution)
b 10 g − − 57–13–6 200–315– −
Urea
Zinc powder 231–175– 030–001–
20 g GHS09 Warning 7440–66–6
(stabilized)/zinc 3 01–9
pellets
Zinc sulfate 20 g GHS05, GHS07, Danger 7446–20–0 231–793– 030–006–
(heptahydrate) GHS09 3 00–9
a
Only one of these substances shall be provided in each set.
b
Generally, IUPAC chemical nomenclature is used with the exceptions of these substances.
c
Only to be provided in chemistry sets intended for children over the age of 12 years.
d
Denatured alcohol (ethanol).
If indicators are supplied in solution, their solid contents shall not exceed the amounts and
concentrations specified in Table 2.
Non-bleeding indicators in books, pads or rolls are not of toxicological concern and are sometimes
supplied without any quantity limitations for the relevant indicator(s).
Table 2 — Maximum amounts and concentrations of indicators for chemistry sets and labelling
Chemical Max. GHS Signal CAS EINECS INDEX
substance/mixture amount Pictograms word number number number
per set (see Figure 1)
Eosin 1 g GHS07 Warning 17372–87– 241–409–6 −
Iodine (0,025 g/ml 10 ml GHS08 Warning 7553–56–2 231–442–4 053–001–00–
mass concentration in 3
an aqueous solution
(0,025 g/ml mass
concentration) of
potassium iodide)
Litmus blue 1 g − − 1393–92–6 215–739–6 −
Litmus red 1 g − − 1393–92–6 215–739–6 −
Luminol (5 % (mass 3 g − − 521–31–3 208–309–4 −
fraction) mixture with
sodium sulfate)
Methyl orange 3 g GHS07 Warning 547–58–0 208–925–3 −
(15 % (mass fraction)
mixture with sodium
sulfate)
Methylene blue 1 g GHS07 Warning 61–73–4 200–515–2 −
Phenol red 1 g GHS07 Warning 143–74–8 205–609–7 −
Thymol blue 1 g − − 76–61–9 200–973–3 −
Bleeding universal 1 pad − − − − −
indicator paper
If not mentioned otherwise, the maximum amounts of the solid substances in Table 1 and Table 2 refer
to the anhydrous chemicals. Equivalent amounts of the hydrated chemicals may replace the anhydrous
substances.
Table 3 — Maximum concentration of reagents not supplied with the chemistry set and labelling
Reagent Maximum GHS Signal CAS EINECS INDEX
concentration Pictograms word number number number
mol/l (see Figure 1)
Ammonia solution 2 GHS05 Danger 1336–21– 215–647– 007–001–01–
6 6 2
Hydrochloric acid 2 GHS05 Warning 7647–01– 231–595– 017–002–01-
0 7 X
Hydrogen 1 - - 7722–84– 231–765– 008–003–00–
a 1 0 9
peroxide
Sodium hydroxide 1 GHS05 Danger 1310–73– 215–185– 011–002–00–
solution 2 5 6
Additional units (e.g. percentage) may also be used on the packaging, instructions for use, etc.
a
The concentration of hydrogen peroxide is equivalent to a 3 % (volume fraction) solution.

a) GHS02 b) GHS03 c) GHS05
d) GHS07 e) GHS08 f) GHS09
These pictograms are taken from Regulation (EC) No. 1272/2008 of the European Parliament and the
Council of 16 December 2008 (also named GHS or CLP) on the classification, labelling and packaging of
substances and mixtures. The use of these pictograms should comply with the requirements of Annex I
to this regulation [1].
Figure 1 — GHS pictograms
4.2 Crystal growing sets
The chemical substances given in Table 4 may be supplied in crystal growing sets or in a supplementary
set for a crystal growing set up to the amounts specified in that table.
A crystal growing set shall only contain substances which cannot react between each other.
The quality of the chemicals used in crystal growing sets should be appropriate for the experiments
described; in particular, the chemicals should not contain impurities or substances which allow
undefined and dangerous reactions to occur.
Besides the chemical substances given in Table 4 only colourants and colouring materials which do not
fulfil the criteria of any of the following hazard classes:
— “acute toxicity” (hazard class 3.1),
— “skin corrosion/irritation” (hazard class 3.2),
— “serious eye damage/eye irritation” (hazard class 3.3),
— “respiratory or skin sensitisation” (hazard class 3.4),
— “germ cell mutagenicity” (hazard class 3.5),
— “carcinogenicity” (hazard class 3.6),
— “reproductive toxicity” (hazard class 3.7),
— “specific target organ toxicity — single exposure” (hazard class 3.8),
— “specific target organ toxicity — repeated exposure” (hazard class 3.9),
— “aspiration hazard” (hazard class 3.10),
shall be supplied in crystal growing sets. Colourants which are permitted for use in food or cosmetics
may be provided.
NOTE The classification is detailed in Regulation (EC) No. 1272/2008 (Annex I, Part 3: Health Hazards).
If substances are supplied as mixtures or if substances/mixtures are supplied in solution, their solid
contents shall not exceed the amounts specified in Table 4.
Samples of materials on which to grow the crystals may be supplied with the set (e.g. plaster of Paris
(gypsum), different stones, different minerals) without limits to their quantities. For gypsum, applicable
requirements are specified in EN 71-5:2015 (i.e. labelling, etc.).
The substances and mixtures in Table 4 in a crystal growing set or in a supplementary set for a crystal
growing set shall be supplied in child-resistant packaging (see 5.2.4.2).
Table 4 — Maximum amounts of chemical substances for crystal growing sets and labelling
Chemical substance Max. GHS Signal CAS EINECS INDEX
amount Pictograms word number number number
per set (see
Figure 1)
g
a 30 GHS07 Warning 12125– 235–186– 017–014–
Ammonium chloride
02–9 4 00–8
Ammonium dihydrogen 600 - - 7722–76– 231–764– −
orthophosphate (Ammonium 1 5
biphosphate)
Aluminium potassium sulfate 600 - - 7784–24– 233–141– −
9 3
b 50 GHS07 Warning 77–92–9 201–069– −
Citric acid
Chemical substance Max. GHS Signal CAS EINECS INDEX
amount Pictograms word number number number
per set (see
Figure 1)
g
Copper (II) sulfate 50 GHS05, Danger 7758–98– 231–847– 029–004–
GHS07, 7 6 00–0
GHS09
Iron (II) sulfate 50 GHS07 Warning 7782–63– 231–753– 026–003–
0 5 00–7
Magnesium sulfate 100 - - 10034– 231–298– −
99–8 2
Potassium dihydrogen phosphate 600 - - 7778–77– 231–913– −
0 4
Potassium hexacyanoferrate (III) 100 GHS07 Warning 13746– 237–323– −
66–2 3
Potassium sodium tartrate 600 - - 6381–59– 205–698– −
5 2
Sodium acetate 100 - - 127–09–3 204–823– −
Sodium hydrogen carbonate 600 - - 144–55–8 205–633– −
b 50 GHS05, Danger 1344–09– 215–687– −
Sodium silicate
GHS07 8 4
(SiO : Na O > 2)
2 2
Sodium sulfate 100 - - 7757–82– 231–820– −
6 9
Sodium thiosulfate 600 - - 7772–98– 231–867– −
7 5
Strontium aluminate 5 GHS 07 Warning e.g. e.g. 234– −
12004– d
455–3
d
37–4
b 50 GHS05 Danger 87–69–4 201–766– −
Tartaric acid
Trisodium citrate 600 - - 6132–04– 200–675– −
3 3
c 5 - - e.g. 1314– e.g. 215– −
Zinc sulfide
d d
98–3 251–3
The maximum amounts specified in Table 4 refer to anhydrous chemicals. Equivalent amounts of the hydrated
chemicals may replace the anhydrous substances.
a
Shall be supplied as an aqueous solution.
b
Shall not be supplied in a set with sodium hydrogen carbonate.
c
Shall not be supplied in a set with any acid, e.g. citric acid.
d
If different to the given number, the CAS or EINECS number of the chemical supplier should be given.
4.3 Carbon dioxide generating experimental sets
The chemical substances given in Table 5 may be supplied in carbon dioxide generating experimental
sets whose function relies on the generation of carbon dioxide. The amounts supplied in a single set
shall not exceed those specified in Table 5. If mixtures of these substances are supplied in solid form,
the single mixture shall consist of stoichiometric equivalent amounts of acidic and CO -generating
substances.
The quality of the chemicals used in carbon dioxide generating experimental sets should be appropriate
for the experiments described; in particular, the chemicals should not contain impurities or substances
which allow undefined and dangerous reactions to occur.
Besides the chemical substances given in Table 5 carbon dioxide generating experimental sets may only
contain gypsum or colourants. For gypsum, applicable requirements are specified in EN 71-5:2015 (i.e.
labelling, etc.). Only colourants and colouring materials which do not fulfil the criteria of any of the
following hazard classes:
— “acute toxicity” (hazard class 3.1),
— “skin corrosion/irritation” (hazard class 3.2),
— “serious eye damage/eye irritation” (hazard class 3.3),
— “respiratory or skin sensitisation” (hazard class 3.4),
— “germ cell mutagenicity” (hazard class 3.5),
— “carcinogenicity” (hazard class 3.6),
— “reproductive toxicity” (hazard class 3.7),
— “specific target organ toxicity — single exposure” (hazard class 3.8),
— “specific target organ toxicity — repeated exposure” (hazard class 3.9),
— “aspiration hazard” (hazard class 3.10),
shall be supplied in carbon dioxide generating experimental sets. Colourants that are permitted for use in
food or cosmetics may be provided.
NOTE The classification is detailed in Regulation (EC) No. 1272/2008 (Annex I, Part 3: Health Hazards).
If substances are supplied as mixtures or if substances/mixtures are supplied in solution, their solid
contents shall not exceed the amounts specified in Table 5.
The substances in Table 5 in a carbon dioxide generating experimental set shall be supplied in child-
resistant packaging (see 5.2.4.3).
Table 5 — Maximum amounts of chemical substances for carbon dioxide generating
experimental sets and labelling
Chemical substance Max. GHS
Signal CAS EINECS INDEX
amount Pictograms word number number number
per set (see Figure 1)
g
a −
100 GHS07 Warning 77–92–9 201–069–1
Citric acid
Disodium hydrogen −
20 − − 7558–79–4 231–448–7
phosphate
a −
60 GHS07 Warning 6915–15–7 230–022–8
Malic acid
Potassium hydrogen −
50 − − 298–14–6 206–059–0
carbonate
Potassium dihydrogen −
100 − − 7778–77–0 231–913–4
phosphate
Sodium dihydrogen −
70 − − 7558–80–7 231–449–2
phosphate
Sodium hydrogen −
100 − − 144–55–8 205–633–8
carbonate
a −
60 GHS05 Danger 87–69–4 201–766–0
Tartaric acid
The maximum amounts specified in Table 5 refer to anhydrous chemicals. Equivalent amounts of the hydrated
chemicals may replace the anhydrous substances.
a
Only one of these substances shall be provided in each set.
5 Equipment
5.1 General requirements
Experimental sets, excluding supplementary sets, shall be supplied with instructions for use (see
Clause 8); a contents list with warnings and first aid information (see Clause 7); the equipment
necessary for carrying out the experiments described in the instructions for use; and, if required, eye
protection (see 5.5) and/or a test tube stand (see 5.4).
Supplementary sets shall be supplied with instructions for use (see Clause 8) and a contents list with
warnings and first aid information, as specified in Clause 7.
All the experiments described in the instructions for use shall be evaluated by the manufacturer. In
particular, it shall not be possible for substances to be formed in amounts that are injurious to health.
Any known hazards arising from the use of the set, especially during the experiments, should be
detailed (e.g. handling of chemicals, handling of glassware, retarded boiling point, back flow of barrier
water into overheated glassware, evolution of gases and handling of burners and other heating
sources).
5.2 Containers and glassware
5.2.1 Test tubes
5.2.1.1 Sets in which test tubes are heated
In experimental sets where the instructions for use include chemical experiments in which test tubes are
heated, all test tubes shall be made of borosilicate glass in order to be heat resistant.
Glass test tubes which are intended to be heated shall have dimensions greater than 110 mm in length
and greater than 15 mm in internal diameter.
Glass test tubes which are not intended to be heated, for example, those used as containers, shall have
dimensions not greater than 90 mm in length and not greater than 12 mm in internal diameter unless
they are made of borosilicate glass.
When necessary, borosilicate glass shall be identified by the test method described in 5.2.6.
5.2.1.2 Sets in which test tubes are not heated
In experimental sets where the instructions for use do not include chemical experiments in which glass
test tubes are heated, any glass tubes not made of borosilicate glass shall be labelled in accordance with
6.2.
5.2.2 Other glassware
In experimental sets where the instructions for use include experiments in which laboratory glassware
is heated, all glassware intended to be heated shall be made of borosilicate glass in order to be heat
resistant. This requirement does not apply to glass tubing intended to be heated for the purpose of
bending.
Unless made of borosilicate glass, glassware which is not intended to be heated but which by its
appearance or shape could be construed as being suitable for heating shall be labelled in accordance
with 6.2.
When necessary, borosilicate glass shall be identified by the test method described in 5.2.6.
5.2.3 Containers for reagents, substances and mixtures
Containers for reagents shall differ in size and shape from laboratory glassware to avoid them being
mistaken as glassware for use in experiments.
All containers for reagents, substances and mixtures shall be shock resistant. They shall not break or
crack when subjected to the drop test specified in EN 71-1:2014+A1:2018.
5.2.4 Packaging and closures
5.2.4.1 Chemistry sets
All substances and mixtures in Table 1 and 2 shall be supplied in child-resistant containers. Closures for
child-resistant containers shall comply with EN ISO 8317:2015.
Closures for child-resistant containers intended to be used for liquids shall not break, crack or leak
when tested according to the following procedure:
— Fill the container with water. The filling volume shall be 3/4 of the container volume.
— Attach the closure.
— Drop the filled container including its closure with its closure facing downwards five times from a
height of (850 ± 50) mm on to a 4 mm thick steel plate according to the steel plate specified in
EN 71-1:2014+A1:2018, 8.5.
— Check visually for any breaks, cracks or leakages of the closure.
NOTE Compliance with these requirements is intended to prevent younger children accessing materials
contained in such containers.
5.2.4.2 Crystal growing sets
The following crystal growing substances in Table 4 shall be supplied in packaging that complies with
5.2.4.1:
— ammonium chloride,
— citric acid,
— copper (II) sulfate,
— iron (II) sulfate,
— potassium hexacyanoferrate (III),
— sodium silicate,
— strontium aluminate,
— tartaric acid.
All other crystal growing substances in Table 4 shall be supplied either:
a) in containers which are provided with closures that comply with 5.2.4.1; or
b) in non-reclosable, child-resistant packaging which complies with EN 862:2016.
The containers and/or packaging in which the substances are supplied shall not contain more than
200 g.
EN 71
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