SIST EN 15030:2013/kFprA1:2014

Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use

This European Standard is applicable to silver nitrate and silver sulfate for the preservation of water intended for human consumption in intermittent applications in: - water supply plants, including their pipeline networks (small-size plants); - water for the preparation of foodstuffs; - water which is stored in packaged form or kept in enclosed systems (for example, water supply systems in land, water and airborne vehicles). The purpose of adding silver salts is to prevent the detrimental proliferation of microorganisms in water during storage or in enclosed supply systems. This European Standard describes the characteristics of silver salts, specifies the requirements for silver salts and gives reference to the analytical methods. It gives information on their use in water treatment. It also determines the rules relating to safe handling and use of silver salts

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Silbersalze für den nicht systematischen Gebrauch

Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Sels d'argent pour usage intermittent

Kemikalije, ki se uporabljajo za pripravo pitne vode - Srebrove soli za uporabo z občasnimi prekinitvami

General Information

• Status: Not Published
• Public Enquiry End Date: 14-Oct-2014
• 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: 98 - Abandoned project (Adopted Project)
• Start Date: 13-Apr-2015
• Due Date: 18-Apr-2015
• Completion Date: 13-Apr-2015
• Ref Project: EN 15030:2012/FprA1 - Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use

Relations

• Consolidated By: SIST EN 15030:2013+A1:2015 - Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use
• Effective Date: 01-May-2015
• Amends: SIST EN 15030:2013 - Chemicals used for treatment of water intended for human consumption - Silver salts for intermittent use
• Effective Date: 01-Sep-2014

Overview

SIST EN 15030:2013/kFprA1:2014 is a European standard specifying requirements for the use of silver salts-specifically silver nitrate, silver sulfate, and silver chloride-for the treatment and preservation of water intended for human consumption under intermittent application conditions. The standard applies to various water supply systems, including small water supply plants, water used in the preparation of foodstuffs, and water stored in packaged form or enclosed distribution systems such as those found in vehicles (land, air, and water).

The primary purpose of applying silver salts is to inhibit the growth of microorganisms and ensure microbiological safety during water storage. The standard details product characteristics, purity requirements, analytical methods, and procedures for safe handling, storage, and transport of silver salts used in water treatment.

Key Topics

• Scope of Application:

  • Silver nitrate, silver sulfate, and silver chloride for intermittent microbiological preservation of drinking water.
  • Relevant for small water plants, packaged water, and enclosed supply systems.

• Product Characteristics and Purity:

  • Specifies the required minimum content (≥99% mass fraction) for silver salts.
  • Outlines acceptable impurity levels for metals such as copper, iron, arsenic, cadmium, and others.
  • Includes detailed physical descriptions and solubility properties of the various silver salts.

• Analytical Methods:

  • References specific techniques for analysis, including EN ISO 11885 for determining metallic impurities.
  • Prescribes standard procedures for preparing test solutions and measuring impurity concentrations.

• Storage, Labelling, and Transportation:

  • Mandates the use of suitable containers, avoiding contact with materials like aluminum.
  • Highlights labelling in accordance with EU regulations on hazardous materials.
  • Addresses transportation classifications, particularly for silver nitrate.
  • Lists hazardous characteristics and required safety pictograms for silver nitrate, per EU guidelines.

• Safe Handling Practices:

  • Covers procedures for managing exposure, accidental contact, fire response, and contamination risks.
  • Emphasizes the need for hygienic storage conditions to prevent dangerous reactions (e.g., with ammonia or acetylene).

Applications

Silver salts play a key role in the intermittent disinfection of water supplies, especially where continuous chemical dosing is not feasible or desirable:

• Drinking Water Supply:

  • Used to preserve water quality in pipes and storage facilities, mainly in smaller or mobile installations.
  • Particularly valuable for water supplies in vehicles (trains, ships, aircraft) where biofilm and microbial proliferation is a risk.

• Food Preparation:

  • Applied to water sources used for food processing to ensure microbiological safety.

• Packaged Water:

  • Used to maintain the safety and shelf-life of water stored in sealed containers, preventing bacterial regrowth during storage.

• Emergency and Remote Situations:

  • Suitable for use in emergency relief supplies, field units, and isolated communities where reliable water supply infrastructure is limited.

Related Standards

For comprehensive water treatment and safety management, consider these connected standards:

• EN 973: Chemicals used for treatment of water intended for human consumption - Sodium chloride for regeneration of ion exchangers.
• Regulation (EU) No 528/2012: Market access and use of biocidal products, relevant to products with antimicrobial claims.
• Directive 98/83/EC: Quality standards for water intended for human consumption.
• Regulation (EC) No 1272/2008: Classification, labelling, and packaging of substances and mixtures (CLP Regulation).

These references support the correct selection, safe application, and legal compliance of silver salts in drinking water treatment processes.

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Keywords: silver salts for water treatment, silver nitrate, silver sulfate, silver chloride, drinking water preservation, microbiological safety, intermittent disinfection, water supply standards, chemical standards for drinking water, safe handling of silver compounds.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2014
.HPLNDOLMHNLVHXSRUDEOMDMR]DSULSUDYRSLWQHYRGH6UHEURYHVROL]DXSRUDER]
REþDVQLPLSUHNLQLWYDPL
Chemicals used for treatment of water intended for human consumption - Silver salts for
intermittent use
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Silbersalze für
den nicht systematischen Gebrauch
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Sels d'argent pour usage intermittent
Ta slovenski standard je istoveten z: EN 15030:2012/FprA1
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 .HPLNDOLMH]DþLãþHQMHYRGH Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
FINAL DRAFT
EN 15030:2012
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
July 2014
ICS 71.100.80
English Version
Chemicals used for treatment of water intended for human
consumption - Silver salts for intermittent use
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Sels d'argent pour menschlichen Gebrauch - Silbersalze für den nicht
usage intermittent systematischen Gebrauch
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 164.
This draft amendment A1, if approved, will modify the European Standard EN 15030:2012. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.

This draft amendment 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15030:2012/FprA1:2014 E
worldwide for CEN national Members.

Contents
Page
Foreword .3
1 Modifications to the Introduction .4
2 Modification to the Scope .4
3 Modifications to Clause 3, Description .4
4 Modifications to Clause 4, Purity criteria .6
5 Modifications to Clause 5, Test methods .7
6 Modifications to Clause 6, Labelling – transportation – storage .8
7 Modifications to Annex A .9
8 Modifications to Annex B . 10
9 Modification to the Bibliography . 10

Foreword
This document (EN 15030:2012/FprA1:2014) 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 Unique Acceptance Procedure.

1 Modifications to the Introduction
Replace "NOTE" with "NOTE 1" and add the following NOTE 2:
"NOTE 2 These products are used as biocides and comply with the relevant legislation in force. In the European Union,
at the time of publication, this legislation is Regulation (EU) No 528/2012 [1]."
In the last sentence, add "ions" after "silver" to read:
"Water which is to be preserved with silver ions should fulfil the relevant legal requirements before the silver
salt is added, in particular microbiological requirements.".
2 Modification to the Scope
Add in the first paragraph, "and silver chloride" to read:
"This European Standard is applicable to silver nitrate, silver sulfate and silver chloride for the preservation of
water intended for human consumption in intermittent applications in:
 water supply plants, including their pipeline networks (small-size plants);
 water for the preparation of foodstuffs;
 and other water which is stored in packaged form or kept in enclosed systems (for example, water supply
systems in land, water and airborne vehicles).".
3 Modifications to Clause 3, Description
In 3.1.1, add:
"
c) silver chloride.".
In 3.1.2, replace "none" with:
"
The naturally occurring mineral is called chlorargyrite or cerargirite, if weathered by air named as horn silver.".
In 3.1.3, add:
"
c) 143,23.".
In 3.1.4, add:
"
c) AgCl.".
In 3.1.5, add:
"
c) AgCl.".
In 3.16, add:
"
c) 7783-90-6.".
In 3.1.7, replace the title with "EINECS number" and add:
"
c) 232-033-3.".
In 3.2, replace the whole paragraph with:
"The products are solids, available as powders or pelletized.".
In 3.3.1, replace the whole paragraph with:
"White to slightly grey or yellowish.
NOTE Silver chloride quickly darkens on exposure to light by disintegrating into elemental chlorine and metallic silver;
the latter is responsible for the colour change.".
In 3.3.2, replace the whole paragraph with:
"
a) 4,35 g/cm (crystal density);
b) 5,45 g/cm (crystal density);
c) 5,56 g/cm (crystal density).".
In 3.3.3, replace the whole paragraph with:
"
a) 2,16 g/l;
b) 8 g/l;
c) 1,88 mg/l at 25 °C.".
In 3.3.5, replace the whole paragraph with:
"
a) 444 °C (decomposition);
b) 1085 °C (decomposition);
c) 1550 °C.".
In 3.3.6, replace the whole paragraph with:
"
a) 212 °C;
b) 652 °C;
c) 455 °C.".
In 3.4, replace normal paragraphs with numbered list to read:
"
a) silver nitrate in solution is almost neutral (the pH value of an aqueous solution at 100 g/l is
approximately 6);
b) silver sulfate in solution is almost neutral (the pH value of an aqueous solution at 5 g/l is
approximately 5 to 6);"
and add:
"
c) the saturated aqueous solution (see 3.3.3) is pH neutral. Silver chloride is insoluble in alcohol, other
organic solvents, dilute acids and concentrated nitric acid, but soluble in concentrated sulphuric acid and
(depending on the individual concentration) in aqueous solutions of ammonia, chlorides, bromides,
thiosulfates and cyanides under complexation of the silver ion.
The standard redox potential (E ) of Ag+/Ag in neutral aqueous solution at 25 °C is: E° = +0.80 V.
The standard redox potential (E ) of AgCl/Ag in neutral solution at 25 °C i
...