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BS EN 12175:2022 – TC:2023 Edition

BS EN 12175:2022 – TC:2023 Edition

$186.33

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

Published By Publication Date Number of Pages
BSI 2023 55
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This document is applicable to hexafluorosilicic acid used for treatment of water intended for human consumption. It describes the characteristics of hexafluorosilicic acid and specifies the requirements and the corresponding test methods for hexafluorosilicic acid. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of hexafluorosilicic acid (see Annex B).

PDF Catalog

PDF Pages PDF Title
1 30462449
31 A-30408005
32 undefined
37 1 Scope
2 Normative references
3 Terms and definitions
4 Description
4.1 Identification
4.1.1 Chemical name
4.1.2 Synonym or common name
38 4.1.3 Relative molecular mass
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 and odour
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
39 4.3.8 Viscosity dynamic
4.3.9 Critical temperature
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
40 5.4 Chemical parameters
6 Test methods
6.1 General
41 6.2 Sampling
6.2.1 General
6.2.2 Sampling from drums and bottles
6.2.2.1 General
6.2.2.2 Surface sampling
6.2.2.3 Procedure of sampling from a container
42 6.2.3 Sampling from tanks and tankers
6.3 Analyses
6.3.1 Hexafluorosilicic acid (main product)
6.3.1.1 Principle
6.3.1.2 Reagents
6.3.1.3 Apparatus
43 6.3.1.4 Procedure
6.3.1.5 Expression of results
44 6.3.2 Impurities
6.3.2.1 Free hydrofluoric acid
6.3.2.2 Phosphate
6.3.3 Chemical parameters
6.3.3.1 General
6.3.3.2 Determination of cadmium (Cd), chromium (Cr), lead (Pb) and nickel (Ni)
47 6.3.3.3 Determination of arsenic (As), antimony (Sb) and selenium (Se)
49 7 Labelling – Transportation – Storage 4
7.1 Means of delivery
7.2 Labelling 5
50 7.3 Transportation regulations and labelling
7.4 Marking
7.5 Storage
7.5.1 Long term stability
7.5.2 Storage incompatibilities
51 Annex A (informative)General information on hexafluorosilicic acid
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
52 Annex B (normative)General rules relating to safety
B.1 Rules for safe handling and use
B.2 Emergency procedures
B.2.1 First aid
B.2.2 Spillage
B.2.3 Fire

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BS EN 12175:2022 - TC
$186.33