Minimum assay.............................................................................. 99,0 %

MAX. IMPURITIES

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

Residue after reduction.................................................................. 0,02 %

Chloride (Cl).................................................................................. 0,005 %

Nitrate (NO3).................................................................................. 0,005 %

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

Other heavy metals (as Pb).......................................................... 0,002 %

Ag............................................................................................... 0,0005 %

Cd............................................................................................... 0,0005 %

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

Fe.................................................................................................. 0,001 %

Hg (I)................................................................................................. 0,4 %

Na................................................................................................. 0,005 %

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

Pb................................................................................................. 0,001 %

Zn............................................................................................... 0,0005 %