NaF M.W. 41.99
DESCRIPTION .............. white powder
ASSAY..................... min 99%
LOSS ON DRYING ........... max 0.2%
WATER INSOLUBLE MATTER ... max 0.01%
CHLORIDE(Cl) ............. max 0.003%
SULPHATE(SO4) ............ max 0.01%
IRON(Fe) ................. max 0.002%
HEAVY METALS(Pb) ......... max 0.001%
COPPER(Cu) ............... max 0.0005%
ACIDITY(HF) .............. max 0.05%
ALKALINITY(NaOH) ......... max 0.04%
FLUOROSILICATE(SiF6) ..... max 0.1%
SULPHITE(SO3) ............ max 0.005%