IS 10668 : 1983 Sodium formaldehyde bisulphite, anhydrous, photographic grade

1 Scope

1.1 This standard prescribes the requirements and the methods ofsampling and test for sodium formaldehyde bisulphite, anhydrous(NaHSO₃.HCHO), photographic grade (molecularweight 134.1).

2 References

IS 571 : 1961Specification for monosodium phosphate

IS 1070 : 1977Specification for water for general laboratory use

IS 2263 : 1979Methods of preparation of indicator solutions

IS 2316 : 1968Methods of preparation of standard solutions forcalorimetric and volumetric analysis

IS 6128 : 1971Specification for desiccators