Minimum assay (Arg.)..................................................................... 99,5 %

pH of 5% solution............................................................................. 6-9,2

MAX. IMPURITIES

Insoluble matter in H2O................................................................. 0,003 %

Loss on drying at 150°C................................................................... 0,2 %

Reducing substances I2 (as I)....................................................... 0,001 %

Chloride and bromide (as Cl).......................................................... 0,01 %

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

Nitrogen compounds (as N)......................................................... 0,001 %

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

Iodate (IO3).................................................................................. 0,0003 %

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

As............................................................................................. 0,00001 %

Ba................................................................................................. 0,001 %

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

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

Co............................................................................................... 0,0005 %

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

Fe................................................................................................ 0,0003 %

Mg.............................................................................................. 0,0005 %

Mn.............................................................................................. 0,0005 %

Na................................................................................................... 0,05 %

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

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

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