SIST EN 1019:2005

Chemicals used for treatment of water intended for human consumption - Sulfur dioxide

This European Standard specifies requirements and the corresponding test methods for sulfur dioxide used for the treatment of water intended for human consumption.

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Schwefeldioxid

Dieses Dokument gilt für Schwefeldioxid zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von Schwefeldioxid und legt die Anforderungen sowie die entsprechenden Prüfverfahren für Schwefeldioxid fest. Es gibt Informationen für die Anwendung von Schwefeldioxid in der Wasseraufbereitung. Es legt darüber hinaus Regeln für die sichere Handhabung und Benutzung fest (siehe Anhang B).

Produits chimiques pour le traitement de l'eau destinée a la consommation humaine - Dioxyde de soufre

Cette norme européenne précise les prescriptions et les méthodes d'analyse correspondant au dioxyde de soufre utilisé pour le traitement de l'eau destinée à la consommation humaine.

Kemikalije, ki se uporabljajo za pripravo pitne vode – Žveplov dioksid

General Information

• Status: Published
• Publication Date: 31-Aug-2005
• ICS: 13.060.20 - Drinking water
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2005
• Due Date: 01-Sep-2005
• Completion Date: 01-Sep-2005
• Directive: TP262 - Uredba o pitni vodi
• Ref Project: EN 1019:2005 - Chemicals used for treatment of water intended for human consumption - Sulfur dioxide

Relations

• Replaces: SIST EN 1019:1999 - Chemicals used for treatment of water intended for human consumption - Sulfure dioxide
• Effective Date: 01-Sep-2005

Overview

EN 1019:2005 (CEN) specifies the requirements and test methods for sulfur dioxide (SO2) used in the treatment of water intended for human consumption. This European Standard covers identification, commercial form, physical/chemical properties, purity criteria, sampling and analytical methods, and rules for labelling, transportation and storage. EN 1019:2005 supersedes EN 1019:1995 and is intended for use across CEN member countries.

Key topics and technical requirements

• Identification & form: Sulfur dioxide (CAS 7446-09-5, formula SO2) is supplied as a liquefied gas; at ambient conditions it is a colorless gas with a pungent odor.
• Physical/chemical data: Document lists key properties (liquid density ~1.4 g/ml at 10 °C, solubility ~110 g/L at 20 °C, boiling point ≈ −9.4 °C, pH of aqueous solution ≈ 1.5).
• Purity criteria: Commercial SO2 for drinking-water treatment must contain ≥ 99.9% SO2. Specified impurity limits include water ≤ 0.01% and sulfuric acid ≤ 0.005% (mass fraction relative to SO2). Manufacturers must notify users of other significant impurities or additives.
• Test methods and sampling:
  • Sampling guidance references ISO 3165 and ISO 6206; sampling must be performed by experts due to hazard risk.
  • Water content by Karl Fischer titration (ISO 760).
  • Sulfuric acid determined by evaporation under dry nitrogen and titration with NaOH (use of bromocresol green indicator).
• Safety, labelling & transport:
  • Classified as toxic/irritant (labels per EU directives; R23, R36/37; S7/9, S44).
  • Transport: UN 1079, RID/ADR class 2 (classification code 2TC); IMDG/IATA: poison gas.
  • Storage: pressured mild-steel containers in cool, ventilated areas; do not reuse containers without cleaning.

Applications and users

• Primary use: dechlorination and removal of excess oxidants (chlorine, ozone) in drinking-water treatment - stoichiometry example: 0.9 g SO2 removes 1.0 g residual chlorine.
• Who uses EN 1019:2005:
  • Water utilities and treatment plant operators
  • Chemical manufacturers and suppliers of SO2
  • Analytical laboratories performing quality control (Karl Fischer, titration)
  • Safety officers, transporters, and emergency responders
  • Regulators assessing conformity for drinking-water use

Related standards

• EN ISO 3696 (water for analytical laboratory use)
• ISO 760 (Karl Fischer)
• ISO 3165, ISO 6206 (sampling)
• EU directives: 98/83/EC (water quality), 67/548/EEC (classification/labeling)
• CESAS recommendations (safe handling of liquid SO2)

This standard is essential for ensuring safe, effective and compliant use of sulfur dioxide in drinking-water treatment, covering purity, testing and risk management.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode – Žveplov dioksidProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - SchwefeldioxidProduits chimiques pour le traitement de l'eau destinée a la consommation humaine - Dioxyde de soufreChemicals used for treatment of water intended for human consumption - Sulfur dioxide71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 1019:2005SIST EN 1019:2005en01-september-2005SIST EN 1019:2005SLOVENSKI
STANDARDSIST EN 1019:19991DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1019
June 2005 ICS 71.100.80 Supersedes EN 1019:1995 English version
Chemicals used for treatment of water intended for human consumption - Sulfur dioxide
Produits chimiques pour le traitement de l'eau destinée à la consommation humaine - Dioxyde de soufre
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Schwefeldioxid This European Standard was approved by CEN on 25 April 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1019:2005: ESIST EN 1019:2005

General information on sulfur dioxide.12 Annex B (normative)
General rules relating to safety.13 Bibliography.14
in order to take into account the latest Directive. (see [1]). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 1019:2005

Conformity with this European standard 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.
1) Chemical Abstracts Service Registry Number. SIST EN 1019:2005

vapour density is
2,7 g/l at 0 °C. 3.3.3 Solubility in water The product is soluble at 110 g/l
at 20 °C. 3.3.4 Vapour pressure 320 kPa at 20 °C.
3.3.5 Boiling point at 100 kPa3) -9,4 °C. 3.3.6 Melting point -75,5 °C. 3.3.7 Specific heat Liquid : 1,337 J/(g.K) at 0 °C 3.3.8 Viscosity (dynamic) Gas: 11,40 x 10-3 mPa.s at 20 °C.
Liquid: 0,76 mPa.s at –50 °C
3.3.9 Critical temperature 157,5 °C
2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kPa = 1 bar. SIST EN 1019:2005

Users of this product should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the products not stated in this product standard. Limits have been given for impurities and chemical parameters where these are likely to be present in significant quantities from the current produ
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