PHYSICAL APPEARANCE : White crytalline Solid, Odourless.
APPLICATION : To remove chlorine from solution according to the eq:
Na2S2O3 + 8CL + 5H2O ---> 2NaHSO4 + 8HCL &
Na2S2O3 + 2HCL ---> 2NaCL + H2O + S + S02
As "Antichlor" in bleaching of Paper pulp, as filter in Photography, for extraction of Silver from ores, as mordant in Dyeing & Printing Textiles, Reducers in Chrome Dyeing, Manufacturing Leather, Bleaching Bone, Straw, Ivory, also as reagent in Analytical Chemistry.
CHEMICAL COMPOSITION : Na2S2O3.5H2O
SOLUBILITY : Soluble in Water
SPECIFIC GRAVITY (20'C) : 1.7
MOLECULAR WEIGHT : 248.17
Chloride (CL) : 0.02%
Sulphate & Sulphite (SO4) : 0.1%
Sulphide (S) : 0.001%
Calcium (CA) : 0.01%
Heavy Metals (As PB) : 0.001%
Assay : 98-99%
