HomeSODIUM THIOSULPHATE 1N SOLUTION SODIUM THIOSULPHATE 1N SOLUTION Product Code B-02533 BRAND Bio-Chem CAS No 7772-98-7 Purity 97.5 % Molecular Formula Na2S2O3 Molecular Weight 158.11 H.S.Code 2832.3010 Shelf Life 36 Months COAs MSDS Physical Properties Physical state at 20 °C Liquid Colour Clear Colorless Density [g/cm3] 1.01 Packaging Specification AppearanceClear colorless solutionNormality1N +/-0.1% Safety Information and Hazard Symbols Symbol: GHS02, GHS07Signal Word: Warning