SIST EN 1017:2025

Chemicals used for treatment of water intended for human consumption - Half-burnt dolomite

This document is applicable to half-burnt dolomite used for treatment of water intended for human consumption. It describes the characteristics of half-burnt dolomite and specifies the requirements and the corresponding test methods for half-burnt dolomite. It gives information on its use in water treatment.

Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Halbgebrannter Dolomit

Dieses Dokument ist anwendbar für halbgebrannten Dolomit zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von halbgebranntem Dolomit und legt die Anforderungen sowie die entsprechenden Prüfverfahren für halbgebrannten Dolomit fest. es enthält Angaben zur Anwendung von halbgebranntem Dolomit in der Wasseraufbereitung.

Produits chimiques pour le traitement de l'eau destinée à la consommation humaine - Dolomie semi-calcinée

Le présent document est applicable à la dolomie semi-calcinée utilisée pour le traitement de l’eau destinée à la consommation humaine. Il décrit les caractéristiques de la dolomie semi-calcinée et spécifie les exigences et les méthodes d’essai correspondantes pour ce composé. Il informe également sur son utilisation dans le cas du traitement de l’eau.

Kemikalije, ki se uporabljajo za pripravo pitne vode - Polpraženi dolomit

Ta dokument se uporablja za polpraženi dolomit, ki se uporablja za pripravo pitne vode. Opisuje značilnosti polpraženega dolomita ter določa zahteve in ustrezne preskusne metode zanj. Podaja informacije za njegovo uporabo pri pripravi vode.

General Information

• Status: Published
• Public Enquiry End Date: 27-Sep-2023
• Publication Date: 18-Aug-2025
• 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: 24-Jul-2025
• Due Date: 28-Sep-2025
• Completion Date: 19-Aug-2025
• Ref Project: EN 1017:2025 - Chemicals used for treatment of water intended for human consumption - Half-burnt dolomite

Relations

• Revises: SIST EN 1017:2014+A1:2017 - Chemicals used for treatment of water intended for human consumption - Half-burnt dolomite
• Effective Date: 18-Jan-2023

Overview

EN 1017:2025 (CEN) specifies requirements for half‑burnt dolomite used in the treatment of water intended for human consumption. Approved 25 May 2025, this European standard updates and supersedes EN 1017:2014+A1:2017. It describes identification, physical and chemical characteristics, purity criteria, sampling and test methods, labelling, transport and storage, plus informative annexes on use and safety.

Key SEO terms: EN 1017:2025, half‑burnt dolomite, water treatment, drinking water chemicals, CEN standard.

Key topics and technical requirements

• Identification and composition
  • Chemical name: calcium magnesium carbonate oxide; common names: half‑burnt dolomite, half‑calcined dolomite.
  • CAS: 83897‑84‑1; EINECS: 281‑192‑5; relative molecular mass: 140.39.
• Physical properties
  • Appearance: white or grey granular material.
  • Density: 2.4 g/cm³ at 20 °C; bulk density 1.05–1.2 g/cm³.
  • Solubility in water: 0.02 g/L at 10 °C.
  • Particle size: variable depending on application.
• Chemical behaviour
  • Acts as an alkali in water and reacts with CO₂ and water to form calcium and magnesium hydrogen carbonates.
• Purity and safety
  • Sets minimum purity criteria and requires notification to users of significant impurities, by‑products or additives derived from raw materials or manufacturing.
  • Includes annexes with general information on origin, manufacturing, dosing, application methods, and safety/first aid/spill handling.
• Testing and sampling
  • References test and sampling standards (see Related Standards). Sampling, analysis and conformity are specified; specific numerical impurity limits are provided in the standard itself.

Practical applications

• Conditioning and pH adjustment in drinking water treatment plants.
• Use as a corrective alkaline reagent where magnesium/calcium balance is relevant.
• Applications where granular form and controlled particle size are required for dosing or filtration systems.

Who should use this standard

• Water utilities and drinking water operators
• Chemical manufacturers and suppliers of half‑burnt dolomite
• Laboratory analysts and QA/QC personnel performing conformity testing
• Regulators, consultants and engineers specifying treatment chemicals
• Transport, storage and safety managers handling bulk reagents

Related standards

• EN 12485 - Test methods for calcium carbonate, high‑calcium lime, half‑burnt dolomite and related products
• ISO 3165 - Sampling of chemical products for industrial use - Safety in sampling
• ISO 6206 - Sampling vocabulary for chemical products

Note: Conformity with EN 1017:2025 does not automatically imply regulatory acceptance in all Member States; national regulations and local requirements for drinking water treatment remain applicable.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Kemikalije, ki se uporabljajo za pripravo pitne vode - Polpraženi dolomit
Chemicals used for treatment of water intended for human consumption - Half-burnt
dolomite
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Halbgebrannter Dolomit
Produits chimiques pour le traitement de l'eau destinée à la consommation humaine -
Dolomie semi-calcinée
Ta slovenski standard je istoveten z: EN 1017:2025
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1017
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2025
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 1017:2014+A1:2017
English Version
Chemicals used for treatment of water intended for human
consumption - Half-burnt dolomite
Produits chimiques pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Dolomie semi- menschlichen Gebrauch - Halbgebrannter Dolomit
calcinée
This European Standard was approved by CEN on 25 May 2025.

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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1017:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Description . 6
4.1 Identification . 6
4.1.1 Chemical name . 6
4.1.2 Synonym or common name . 6
4.1.3 Relative molecular mass . 6
4.1.4 Empirical formula . 6
4.1.5 Chemical formula . 6
4.1.6 CAS Registry Number . 7
4.1.7 EINECS reference . 7
4.2 Commercial forms . 7
4.3 Physical properties . 7
4.3.1 Appearance . 7
4.3.2 Density . 7
4.3.3 Solubility in water . 7
4.3.4 Vapour pressure . 7
4.3.5 Boiling point at 100 kPa . 7
4.3.6 Melting point . 7
4.3.7 Specific heat . 7
4.3.8 Viscosity (dynamic) . 7
4.3.9 Critical temperature . 7
4.3.10 Critical pressure . 7
4.3.11 Physical hardness . 7
4.3.12 Particle size . 8
4.4 Chemical properties . 8
5 Purity criteria . 8
5.1 General. 8
5.2 Composition of commercial product . 8
5.3 Impurities and main by-product . 8
5.4 Chemical parameters. 9
6 Test methods . 9
6.1 Sampling - solid . 9
6.2 Analyses. 9
7 Labelling - Transportation - Storage . 10
7.1 Means of delivery . 10
7.2 Labelling . 10
7.3 Transportation regulations and labelling . 11
7.4 Marking . 11
7.5 Storage . 11
7.5.1 Long term stability . 11
7.5.2 Storage incompatibilities . 11
Annex A (informative) General information on half-burnt dolomite . 12
A.1 Origin . 12
A.1.1 Raw materials . 12
A.1.2 Manufacturing process . 12
A.2 Use . 12
A.2.1 Function . 12
A.2.2 Other properties . 12
A.2.3 Form in which it is used . 12
A.2.4 Treatment dose . 12
A.2.5 Means of application. 12
A.2.6 Secondary effects . 12
A.2.7 Removal of excess product . 13
Annex B (informative) General rules relating to safety . 14
B.1 Rules for safe handling and use . 14
B.2 First aid . 14
B.3 Spillage . 14
B.4 Fire . 14
Bibliography . 15

European foreword
This document (EN 1017:2025) 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 January 2026, and conflicting national standards shall
be withdrawn at the latest by January 2026.
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 responsibl
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