Assay (Acidim.)..................................................................................98 %

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

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

Chloride (Cl).................................................................................... 0,05 %

Sulphate (SO4)................................................................................ 0,02 %

Heavy metals (as Pb).................................................................... 0,002 %

As............................................................................................... 0,0003 %

Cu................................................................................................. 0,002 %

Fe.................................................................................................. 0,002 %

Ni.................................................................................................. 0,002 %

Pb................................................................................................. 0,002 %