Assay (Acidim.)......................................................................99,5-103,0%

pH of 0,01 mol/l solution............................................................ 9,15-9,20

MAX. IMPURITIES

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

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

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

Sulphate (SO4)............................................................................ 0,0025 %

Ammonium (NH4).......................................................................... 0,001 %

Heavy metals (as Pb).................................................................... 0,001 %

As............................................................................................... 0,0001 %

Ca................................................................................................. 0,005 %

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

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

Mg................................................................................................ 0,002 %

Ni.................................................................................................. 0,001 %

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