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BS EN 12125:2022

BS EN 12125:2022

$102.76

Chemicals used for treatment of water intended for human consumption — Sodium thiosulfate

Published By Publication Date Number of Pages
BSI 2022 20
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This document is applicable to sodium thiosulfate used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of sodium thiosulfate and refers to the corresponding analytical methods. It gives information for its use in water treatment.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
4 Description
4.1 Identification
4.1.1 Chemical name
4.1.2 Synonym or commons names
4.1.3 Relative molecular mass
8 4.1.4 Empirical formula
4.1.5 Chemical formula
4.1.6 CAS-Registry Number
4.1.7 EINECS reference
4.2 Commercial form
4.3 Physical properties
4.3.1 Appearance
4.3.2 Density
4.3.3 Solubility in water
4.3.4 Vapour pressure
4.3.5 Boiling point at 100 kPa
4.3.6 Crystallization point
4.3.7 Specific heat
4.3.8 Viscosity, dynamic
4.3.9 Critical temperature
9 4.3.10 Critical pressure
4.3.11 Physical hardness
4.4 Chemical properties
5 Purity criteria
5.1 General
5.2 Composition of commercial product
5.3 Impurities and main by-products
5.4 Chemical parameters
10 6 Test methods
6.1 Sampling
6.2 Analyses
6.2.1 Main product
6.2.2 Impurities
6.2.3 Chemical parameters
6.2.3.1 General
11 6.2.3.2 Determination of cadmium (Cd), chromium (Cr), lead (Pb) and nickel (Ni)
14 6.2.3.3 Determination of arsenic (As), antimony (Sb) and selenium (Se)
16 7 Labelling – Transportation – Storage
7.1 Means of delivery
7.2 Labelling according to the EU legislation
7.3 Transportation regulations and labelling
7.4 Marking
7.5 Storage
7.5.1 Long term stability
7.5.2 Storage incompatibilities
17 Annex A (informative)General information on sodium thiosulfate
A.1 Origin
A.1.1 Raw materials
A.1.2 Manufacturing process
A.2 Use
A.2.1 Function
A.2.2 Form in which it is used
A.2.3 Treatment dose
A.2.4 Means of application
A.2.5 Secondary effects
A.2.6 Removal of excess product
A.3 General rules relating to safety
A.3.1 Rules for safe handling and use
18 Annex B (normative)General rules relating to safety
B.1 Emergency procedures
B.1.1 First aid
B.1.2 Spillage
B.1.3 Fire

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BS EN 12125:2022
$102.76