Contents 1. Scope 2. Normative references 3. Molecular formula and relative molecular mass 4. Technical requirements A.1 Caution A.2 General conditions A.3 Identification A.4 Determination of content of available chlorine A.5 Determination of content of free alkali A.6 Determination of content of Fe A.7 Determination of content of heavy metal A.8 Determination of content of y |