Minimum assay (Acidim.)............................................................... 85,0 %

MAX. IMPURITIES

Insoluble matter in H2O......................................................................... p/t.

Residue on ignition (as SO4)........................................................... 0,02 %

Darkened substances by H2SO4........................................................... p/t.

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

Sulphate (SO4).............................................................................. 0,002 %

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

As............................................................................................. 0,00001 %

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

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

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

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