C2H3NaO2S M.W. 114.10
DESCRIPTION ........... White crystalline powder
SOLUBILITY ............ 10% aq soln is colourless
ASSAY ................. min 99%
pH(5%aq.solution) ..... 6.5-8.0
SULPHATE(SO4) ......... max 0.005%
IRON(Fe) .............. max 0.001%
HEAVY METALS(Pb) ...... max 0.001%