SODIUM THIOSULPHATE PENTAHYDRATE 99.50 AR/ACS - 500 GM

Na2S2O3.5H2O M.W. 248.17 5 kg

Assay 99.5-100.5%

Insoluble matter max 0.003%

Reaction pH 5.5-7.5

Chloride(Cl) max 0.02%

Nitrogen compounds(N) max 0.005%

Sulphate and sulphite(SO4) max 0.1%

Sulphide(S) max 0.0002%

Calcium(Ca) max 0.002%

Copper(Cu) max 0.0005%

Iron(Fe) max 0.0005%

Lead(Pb) max 0.0005%

Magnesium(Mg) max 0.001%

Potassium(K) max 0.001%