UNI EN 973 : 2009
Current
The latest, up-to-date edition.
CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - SODIUM CHLORIDE FOR REGENERATION OF ION EXCHANGERS
08-10-2009
Foreword
Introduction
1 Scope
2 Normative references
3 Description
3.1 Identification
3.2 Commercial forms
3.3 Physical properties
3.4 Chemical properties
4 Purity criteria
4.1 General
4.2 Composition of commercial product
4.3 Impurities and main by-products
4.4 Chemical parameters
5 Test methods
5.1 Sampling
5.2 Analyses
6 Labelling - Transportation - Storage
6.1 Means of delivery
6.2 Risk and safety labelling in accordance with the EU
directives
6.3 Transportation regulations and labelling
6.4 Marking
6.5 Storage
Annex A (informative) - General information on sodium
chloride
Annex B (normative) - Analytical methods
Annex C (informative) - Determination of cadmium,
chromium, nickel and lead (flame atomic absorption
spectrometry
Annex D (informative) - Determination of arsenic, antimony
and selenium (atomic absorption spectrometry hydride
technique)
Bibliography
Applies to sodium chloride intended for use only in water treatment apparatus, for the regeneration of ion exchangers, intended for water for human consumption. Details the characteristics and specifies the requirements and the corresponding test methods for sodium chloride. Also provides information on its use in water treatment.
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| I.S. EN 973:2009 | Identical |
| DIN EN 973:2009-12 | Identical |
| NS EN 973 : 2009 | Identical |
| NF EN 973 : 2009 | Identical |
| NEN EN 973 : 2009 | Identical |
| EN 973:2009 | Identical |
| UNE-EN 973:2010 | Identical |
| NBN EN 973 : 2009 | Identical |
| SN EN 973 : 2009 | Identical |
| BS EN 973:2009 | Identical |
| ISO 3165:1976 | Sampling of chemical products for industrial use — Safety in sampling |
| ISO 2483:1973 | Sodium chloride for industrial use — Determination of the loss of mass at 110 degrees C |
| ISO 6227:1982 | Chemical products for industrial use General method for determination of chloride ions Potentiometric method |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
| ISO 6206:1979 | Chemical products for industrial use — Sampling — Vocabulary |
| ISO 2482:1973 | Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods |
| ISO 8213:1986 | Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of particles varying from powders to coarse lumps |
| ISO 2479:1972 | Sodium chloride for industrial use — Determination of matter insoluble in water or in acid and preparation of principal solutions for other determinations |
| ISO 2480:1972 | Sodium chloride for industrial use — Determination of sulphate content — Barium sulphate gravimetric method |
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