Na2WO4.2H2O M.W. 329.86
DESCRIPTION ............. white crystalline powder
SOLUBILITY .............. 10% aq soln is clear & colourless
ASSAY(T) ................ min 98%
pH(2% AQ SOLUTION) ...... 8-10
CHLORIDE(Cl) ............ max 0.05%
SULPHATE(SO4) ........... max 0.05%
NITRATE(NO3) ............ max 0.01%