IS 4265 : 1975 Specification for 4,4'-Diaminostilbene-2,2'-Disulphonic Acid

1 Scope

1.1 This standard prescribes the requirements and the methods ofsampling and test for 4,4'-diaminostilbene-2,2'-disulphonic acidwhich may be in the form of free acid or disodium salt.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 170 : 1966Specification for acetone

IS 265 : 1962Specification for hydrochloric acid

IS 1070 : 1960Specification for water, distilled quality

IS 2552 : 1970Specification for steel drums (galvanized and Ungalvanized)

IS 5299 : 1969Methods of sampling and tests for dye intermediates