Assay (Compl.)......................................................................99,0-102,0%

pH of 5% solution...............................................................................≥3,0

MAX. IMPURITIES

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

Loss on drying at 300°C....................................................................48 %

Alkali and alkaline-earth salts........................................................... 0,3 %

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

Phosphate (PO4)......................................................................... 0,0025 %

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

As............................................................................................. 0,00005 %

Ca................................................................................................... 0,05 %

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

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

K..................................................................................................... 0,05 %

Na................................................................................................... 0,01 %

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

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