Chemicals used for treatment of water intended for human consumption - Liquefied ammonia

This document is applicable to liquefied ammonia used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of liquefied ammonia and refers to the corresponding analytical methods. It gives information for its use in water treatment. It also determines the rules relating to the safe handling and use of liquefied ammonia (see Annex B).

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniak, flüssig

Dieses Dokument gilt für flüssiges Ammoniak zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von flüssigem Ammoniak und legt die Anforderungen sowie die ent¬sprechenden Prüfverfahren für flüssiges Ammoniak fest. Es enthält Angaben zu dessen Anwendung in der Wasseraufbereitung. Es legt darüber hinaus Regeln für die sichere Handhabung und Verwendung von flüssigem Ammoniak fest (siehe Anhang B).

Produits chimiques utilisés pour le traitement de l’eau destinée à la consommation humaine - Ammoniac liquéfié

Le présent document s’applique à l’ammoniac liquéfié utilisé pour le traitement de l’eau destinée à la consommation humaine. Il décrit les caractéristiques de l’ammoniac liquéfié, en spécifie les exigences ainsi que les méthodes d’analyse correspondantes. Il donne des informations pour son emploi dans le traitement de l’eau. Il fixe également les règles relatives à la sécurité d’emploi et de manipulation de l’ammoniac liquéfié (voir l’Annexe B).

Kemikalije, ki se uporabljajo za pripravo pitne vode - Salmiak

General Information

Status
Published
Public Enquiry End Date
19-Jul-2020
Publication Date
11-May-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-May-2022
Due Date
16-Jul-2022
Completion Date
12-May-2022

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SLOVENSKI STANDARD
SIST EN 12126:2022
01-junij-2022
Nadomešča:
SIST EN 12126:2013
Kemikalije, ki se uporabljajo za pripravo pitne vode - Salmiak
Chemicals used for treatment of water intended for human consumption - Liquefied
ammonia
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniak,
flüssig

Produits chimiques utilisés pour le traitement de l’eau destinée à la consommation

humaine - Ammoniac liquéfié
Ta slovenski standard je istoveten z: EN 12126:2022
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
SIST EN 12126:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 12126:2022
---------------------- Page: 2 ----------------------
SIST EN 12126:2022
EN 12126
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 12126:2012
English Version
Chemicals used for treatment of water intended for human
consumption - Liquefied ammonia

Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den

destinée à la consommation humaine - Ammoniac menschlichen Gebrauch - Ammoniak, flüssig

liquéfié
This European Standard was approved by CEN on 20 March 2022.

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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12126:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Description ........................................................................................................................................................ 5

4.1 Identification .................................................................................................................................................... 5

4.2 Commercial form ............................................................................................................................................ 6

4.3 Physical properties ........................................................................................................................................ 6

4.4 Chemical properties ....................................................................................................................................... 7

5 Purity criteria ................................................................................................................................................... 7

5.1 General................................................................................................................................................................ 7

5.2 Composition of commercial product ....................................................................................................... 7

5.3 Impurities and main by-products ............................................................................................................. 7

5.4 Chemical parameters..................................................................................................................................... 7

6 Test methods .................................................................................................................................................... 8

6.1 Sampling ............................................................................................................................................................. 8

6.2 Analyses.............................................................................................................................................................. 8

7 Labelling – Transportation – Storage .................................................................................................... 12

7.1 Means of delivery .......................................................................................................................................... 12

7.2 Labelling according to the EU legislation ) .......................................................................................... 13

7.3 Transportation regulations and labelling ........................................................................................... 15

7.4 Marking ............................................................................................................................................................ 15

7.5 Storage .............................................................................................................................................................. 15

Annex A (informative) General information on liquefied ammonia ....................................................... 16

Annex B (normative) General rules relating to safety .................................................................................. 17

Bibliography ................................................................................................................................................................. 18

---------------------- Page: 4 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
European foreword

This document (EN 12126:2022) has been prepared by Technical Committee CEN/TC 164 “Water

supply”, the secretariat of which is held by AFNOR.

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 October 2022, and conflicting national standards shall

be withdrawn at the latest by October 2022.

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 12126:2012.

In comparison with the previous edition, the following technical modifications have been made:

a) modification of 7.3 on transportation regulations and labelling, adding the sentence “The user shall

be aware of the incompatibilities between transported products.”;

b) modification of 7.4 on marking. The requirements of marking are also applied to the accompanying

documents;
c) use of the changed classification and labelling (see [2]).

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

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.
---------------------- Page: 5 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
Introduction

In respect of potential adverse effects on the quality of water intended for human consumption caused

by the product covered by this document:

a) this document provides no information as to whether the product may be used without restriction

in any of the Member States of the EU or EFTA;

b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national

regulations concerning the use and/or the characteristics of this product remain in force.

NOTE Conformity with this document does not confer or imply acceptance or approval of the product in any

of the Member States of the EU or EFTA. The use of the product covered by this document is subject to regulation

or control by National Authorities (see Annex A).
---------------------- Page: 6 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
1 Scope

This document is applicable to liquefied ammonia used for treatment of water intended for human

consumption. It describes the characteristics and specifies the requirements of liquefied ammonia and

refers to the corresponding analytical methods. It gives information for its use in water treatment. It

also determines the rules relating to the safe handling and use of liquefied ammonia (see Annex B).

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 ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)

ISO 7103, Liquefied anhydrous ammonia for industrial use — Sampling — Taking a laboratory sample

ISO 7105, Liquefied anhydrous ammonia for industrial use — Determination of water content — Karl

Fischer method

ISO 7106, Liquefied anhydrous ammonia for industrial use — Determination of oil content — Gravimetric

and infra-red spectrometric methods
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Description
4.1 Identification
4.1.1 Chemical name
Ammonia liquefied, anhydrous.
4.1.2 Synonym or common name
Ammonia.
4.1.3 Relative molecular mass
17,03.
4.1.4 Empirical formula
NH .
4.1.5 Chemical formula
NH .
---------------------- Page: 7 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
4.1.6 CAS Registry Number
7664-41-7.
4.1.7 EINECS reference
231-635-3.
4.2 Commercial form
The product is available as liquefied gas.
4.3 Physical properties
4.3.1 Appearance and odour
The product is colourless liquid with a characteristic pungent odour.
4.3.2 Density
The density of the gas is 0,771 g/l at 101,3 kPa and 0 °C.

The density of the liquid is 0,682 g/ml at 101,3 kPa and −34 °C, and 0,61 g/ml at 850 kPa and 20 °C.

4.3.3 Solubility (in water)

The solubility of the product in water is 900 g/l at 0 °C, 520 g/l at 20 °C, and 407 g/l at 30 °C.

4.3.4 Vapour pressure

The vapour pressure of the product is 400 kPa at 0 °C, 850 kPa at 20 °C and 2 035 kPa at 50 °C.

4.3.5 Boiling point at 100 kPa
The boiling point of the product is −33,4 °C at 101,3 kPa.
4.3.6 Melting point
The melting point of the product is −77,7 °C at 101,3 kPa.
4.3.7 Specific heat

The specific heat of the product is 4,61 kJ/(kg K) at 0 °C and 4,86 kJ/(kg K) at 40 °C.

4.3.8 Viscosity, dynamic
The viscosity of the product is 0,254 mPa s at −33 °C and 101,3 kPa.
4.3.9 Critical temperature
132,4 °C.
4.3.10 Critical pressure
11 450 kPa.
Chemical Abstracts Service Registry Number.
European Inventory of Existing Commercial Chemical Substances.
100 kPa = 1 bar.
---------------------- Page: 8 ----------------------
SIST EN 12126:2022
EN 12126:2022 (E)
4.3.11 Physical hardness
Not applicable.
4.4 Chemical properties

Ammonia reacts violently with halogens, acids, acid halides, acid anhydrides and oxidising agents. It

reacts with zinc, copper, tin and their alloys. Mixtures of volume fraction of 15 % to 30 % of ammonia

with air are explosive. For additional information on liquefied ammonia, see Annex A.

5 Purity criteria
5.1 General

This document specifies the minimum purity requirements for liquefied ammonia used for the

treatment of water intended for hum
...

SLOVENSKI STANDARD
oSIST prEN 12126:2020
01-julij-2020
Kemikalije, ki se uporabljajo za pripravo pitne vode - Salmiak
Chemicals used for treatment of water intended for human consumption - Liquefied
ammonia
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Ammoniak,
flüssig

Produits chimiques utilisés pour le traitement de l’eau destinée à la consommation

humaine - Ammoniac liquéfié
Ta slovenski standard je istoveten z: prEN 12126
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
oSIST prEN 12126:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 12126:2020
---------------------- Page: 2 ----------------------
oSIST prEN 12126:2020
DRAFT
EUROPEAN STANDARD
prEN 12126
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2020
ICS 71.100.80 Will supersede EN 12126:2012
English Version
Chemicals used for treatment of water intended for human
consumption - Liquefied ammonia

Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den

destinée à la consommation humaine - Ammoniac menschlichen Gebrauch - Ammoniak flüssig

liquéfié

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 164.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
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. prEN 12126:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Description ........................................................................................................................................................ 5

4.1 Identification .................................................................................................................................................... 5

4.2 Commercial form ............................................................................................................................................ 6

4.3 Physical properties ........................................................................................................................................ 6

4.4 Chemical properties ....................................................................................................................................... 7

5 Purity criteria ................................................................................................................................................... 7

5.1 General................................................................................................................................................................ 7

5.2 Composition of commercial product ....................................................................................................... 7

5.3 Impurities and main by-products ............................................................................................................. 7

5.4 Chemical parameters..................................................................................................................................... 7

6 Test methods .................................................................................................................................................... 7

6.1 Sampling ............................................................................................................................................................. 7

6.2 Analyses.............................................................................................................................................................. 8

7 Labelling – Transportation – Storage .................................................................................................... 12

7.1 Means of delivery .......................................................................................................................................... 12

7.2 Labelling according to the EU legislation ........................................................................................... 12

7.3 Transportation regulations and labelling ........................................................................................... 14

7.4 Marking ............................................................................................................................................................ 15

7.5 Storage .............................................................................................................................................................. 15

Annex A (informative) General information on liquefied ammonia ......................................................... 16

Annex B (normative) General rules relating to safety .................................................................................... 17

Bibliography ................................................................................................................................................................. 18

---------------------- Page: 4 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
European foreword

This document (prEN 12126:2020) has been prepared by Technical Committee CEN/TC 164 “Water

supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12126:2012.

In comparison with the previous edition, the following technical modifications have been made:

a) modification of 7.3 on transportation regulations and labelling, adding the sentence “The user must

be aware of the incompatibilities between transported products.”;

b) modification of 7.4 on marking. The requirements of marking are also applied to the accompanying

documents;
c) use of the changed classification and labelling (see [2]).
---------------------- Page: 5 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
Introduction

In respect of potential adverse effects on the quality of water intended for human consumption caused

by the product covered by this document:

a) this document provides no information as to whether the product may be used without restriction

in any of the Member States of the EU or EFTA;

b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national

regulations concerning the use and/or the characteristics of this product remain in force.

NOTE Conformity with this document does not confer or imply acceptance or approval of the product in any

of the Member States of the EU or EFTA. The use of the product covered by this document is subject to regulation

or control by National Authorities.
---------------------- Page: 6 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
1 Scope

This document is applicable to liquefied ammonia used for treatment of water intended for human

consumption. It describes the characteristics and specifies the requirements of liquefied ammonia and

refers to the corresponding analytical methods. It gives information for its use in water treatment. It

also determines the rules relating to the safe handling and use of liquefied ammonia (see Annex B).

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 ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)

ISO 7103, Liquefied anhydrous ammonia for industrial use — Sampling — Taking a laboratory sample

ISO 7105, Liquefied anhydrous ammonia for industrial use — Determination of water content — Karl

Fischer method

ISO 7106, Liquefied anhydrous ammonia for industrial use — Determination of oil content — Gravimetric

and infra-red spectrometric methods
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Description
4.1 Identification
4.1.1 Chemical name
Ammonia liquefied, anhydrous.
4.1.2 Synonym or common name
Ammonia.
4.1.3 Relative molecular mass
17,03.
4.1.4 Empirical formula
NH .
4.1.5 Chemical formula
NH .
---------------------- Page: 7 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
4.1.6 CAS Registry Number
7664-41-7.
4.1.7 EINECS reference
231-635-3.
4.2 Commercial form
The product is available as liquefied gas.
4.3 Physical properties
4.3.1 Appearance and odour
The product is colourless liquid with a characteristic pungent odour.
4.3.2 Density
The density of the gas is 0,771 g/l at 101,3 kPa and 0 °C.

The density of the liquid is 0,682 g/ml at 101,3 kPa and −34 °C, and 0,61 g/ml at 850 kPa and 20 °C.

4.3.3 Solubility (in water)

The solubility of the product in water is 900 g/l at 0 °C, 520 g/l at 20 °C, and 407 g/l at 30 °C.

4.3.4 Vapour pressure

The vapour pressure of the product is 400 kPa at 0 °C, 850 kPa at 20 °C and 2 035 kPa at 50 °C.

4.3.5 Boiling point at 100 kPa
The boiling point of the product is −33,4 °C at 101,3 kPa.
4.3.6 Melting point
The melting point of the product is −77,7 °C at 101,3 kPa.
4.3.7 Specific heat

The specific heat of the product is 4,61 kJ/(kg K) at 0 °C and 4,86 kJ/(kg K) at 40 °C.

4.3.8 Viscosity, dynamic
The viscosity of the product is 0,254 mPa.s at 33 °C and 101,3 kPa.
4.3.9 Critical temperature
132,4 °C.
4.3.10 Critical pressure
11 450 kPa.
4.3.11 Physical hardness
Not applicable.
Chemical Abstracts Service Registry Number.
European Inventory of Existing Commercial Chemical Substances.
100 kPa = 1 bar.
---------------------- Page: 8 ----------------------
oSIST prEN 12126:2020
prEN 12126:2020 (E)
4.4 Chemical properties

Ammonia reacts violently with halogens, acids, acid halides, acid anhydrides and oxidising agents. It

reacts with zinc, copper, tin and their alloys. Mixtures of volume fraction of 15 % to 30 % of ammonia

with air are explosive. For additional information on liquefied ammonia, see Annex A.

5 Purity criteria
5.1 General

This document specifies the minimum purity requirements for liquefied ammonia used for the

treatment of water intended for human consumption. Limits are given for impurities commonly present

in the product. Depending on the raw material and the manufacturing process other impurities may be

present and, if so, this shall be notified to the user and
...

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