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BS EN 937:2016

BS EN 937:2016

$142.49

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

Published By Publication Date Number of Pages
BSI 2016 26
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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
4 Contents Page
5 European foreword
6 Introduction
7 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)
8 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
9 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
10 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
11 6.2 Labelling in accordance with EU legisation 3F4)
12 6.3 Transportation regulations and labelling
13 6.4 Marking
6.5 Storage
6.5.1 Storage conditions
6.5.2 Long term stability
6.5.3 Storage incompatibilities
14 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
15 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
16 Annex C (informative) Determination of nitrogen trichloride (molecular absorption spectrometry)
C.1 General
C.2 Principle
C.3 Reaction
C.4 Reagents
17 C.5 Apparatus
18 C.6 Sampling and samples
C.7 Procedure
C.7.1 Calibration solutions
C.7.2 Discharge and evaporation (see Figure C.1)
19 C.7.3 Test solution
C.7.4 Determination
20 C.7.5 Blank test determination
21 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)
22 C.8.2 Test solution
Table C.1 — Calibration graph
Table C.2 — Temperature and density of liquid chlorine
23 Bibliography

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BS EN 937:2016
$142.49