NEN EN 12175 : 2013

Foreword
Introduction
1. Scope
2. Normative references
3. Description
    3.1 Identification
    3.2 Commercial form
    3.3 Physical properties
    3.4 Chemical properties
4. Purity criteria
    4.1 Composition of commercial product
    4.2 Impurities and main by-product
    4.3 Chemical parameters
5. Test methods
    5.1 General
    5.2 Sampling
    5.3 Analyses
6. Labelling - Transportation - Storage
    6.1 Means of delivery
    6.2 Risk and safety labelling according to the
        EU Directives
    6.3 Transportation regulations and labelling
    6.4 Marking
    6.5 Storage
Annex A (informative) General information on hexafluorosilicic
                      acid
A.1 Origin
A.2 Use
Annex B (normative) General rules relating to safety
B.1 Rules for safe handling and use
B.2 Emergency procedures
Bibliography

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.