Minimum assay (Acidim.)..................................................................99 %

pH of 5% solution.......................................................................... 6,5-7,0

MAX. IMPURITIES

Insoluble matter in H2O................................................................. 0,005 %

Residue on ignition (as SO4)........................................................... 0,05 %

Chloride (Cl).................................................................................. 0,001 %

Phosphate (PO4)........................................................................... 0,001 %

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

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

As............................................................................................. 0,00005 %

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

Fe................................................................................................ 0,0005 %

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

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