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BS EN 937:2016 – TC:2020 Edition

BS EN 937:2016 – TC:2020 Edition

$186.33

Tracked Changes. Chemicals used for treatment of water intended for human consumption. Chlorine

Published By Publication Date Number of Pages
BSI 2020 50
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This European Standard is applicable to chlorine used for treatment of water intended for human consumption. It describes the characteristics of chlorine and specifies the requirements and the corresponding test methods for chlorine. It gives information on its use in water treatment.

PDF Catalog

PDF Pages PDF Title
28 Contents Page
29 European foreword
30 Introduction
31 1 Scope
2 Normative references
3 Description
3.1 Identification
3.1.1 Chemical name
3.1.2 Synonym or common name
3.1.3 Relative molecular mass
3.1.4 Empirical formula
3.1.5 Chemical formula
3.1.6 CAS Registry Number 0F1)
32 3.1.7 EINECS reference 1F2)
3.2 Commercial form
3.3 Physical properties
3.3.1 Appearance
3.3.2 Density
3.3.3 Solubility (in water)
3.3.4 Vapour pressure
3.3.5 Boiling point at 100 kPa 2F3)
3.3.6 Liquefaction point
3.3.7 Specific heat
3.3.8 Viscosity (dynamic)
3.3.9 Critical temperature
33 3.3.10 Critical pressure
3.3.11 Physical hardness
3.4 Chemical properties
4 Purity criteria
4.1 General
4.2 Composition of commercial product
4.3 Impurities and main by-products
Table 1 — Impurities
34 4.4 Chemical parameters
5 Test methods
5.1 General
5.2 Sampling
5.3 Analysis
5.3.1 Determination of chlorine content
5.3.2 Determination of water content
5.3.3 Determination of nitrogen trichloride content
6 Labelling – Transportation – Storage
6.1 Means of delivery
35 6.2 Labelling in accordance with EU legisation 3F4)
36 6.3 Transportation regulations and labelling
37 6.4 Marking
6.5 Storage
6.5.1 Storage conditions
6.5.2 Long term stability
6.5.3 Storage incompatibilities
38 Annex A (informative) General information on chlorine
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 the product 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
39 Annex B (informative) General rules relating to safety
B.1 Rules for safe handling and use
B.2 Emergency procedures
B.2.1 General
B.2.2 First aid
B.2.3 Spillage
B.2.4 Fire
40 Annex C (informative) Determination of nitrogen trichloride (molecular absorption spectrometry)
C.1 General
C.2 Principle
C.3 Reaction
C.4 Reagents
41 C.5 Apparatus
42 C.6 Sampling and samples
C.7 Procedure
C.7.1 Calibration solutions
C.7.2 Discharge and evaporation (see Figure C.1)
43 C.7.3 Test solution
C.7.4 Determination
44 C.7.5 Blank test determination
45 Figure C.1 — Device for discharge and evaporation
C.8 Calculation and expression of the results
C.8.1 Calibration graph (see Table C.1)
46 C.8.2 Test solution
Table C.1 — Calibration graph
Table C.2 — Temperature and density of liquid chlorine
47 Bibliography

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BS EN 937:2016 - TC
$186.33