Minimum assay (Acidim.)..................................................................97 %

pH of 5% solution.......................................................................... 6,7-7,3

MAX. IMPURITIES

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

Residue on ignition (as SO4)........................................................... 0,01 %

Reducing substances to KMnO4.......................................................... p/t.

Chloride (Cl)................................................................................ 0,0005 %

Phosphate (PO4)......................................................................... 0,0005 %

Nitrate (NO3).................................................................................. 0,001 %

Sulphate (SO4).............................................................................. 0,001 %

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

Al................................................................................................ 0,0005 %

Ca................................................................................................. 0,001 %

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

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

Mg................................................................................................ 0,001 %

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

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