Minimum assay (Compl.)................................................................ 99,0 %

pH of 5% solution.......................................................................... 5,0-7,0

MAX. IMPURITIES

Insoluble matter in H2O................................................................... 0,01 %

Loss on drying at 105°C................................................................... 0,1 %

Chloride (Cl).................................................................................. 0,002 %

Sulphate (SO4).............................................................................. 0,005 %

Heavy metals (as Pb).................................................................. 0,0005 %

Ba................................................................................................... 0,05 %

Ca................................................................................................... 0,05 %

Cu............................................................................................... 0,0005 %

Fe................................................................................................ 0,0002 %

K..................................................................................................... 0,05 %

Mg.................................................................................................. 0,05 %

Na................................................................................................... 0,05 %

Ni................................................................................................ 0,0005 %

Pb............................................................................................... 0,0005 %