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

pH of 5% solution.......................................................................... 5,0-8,0

MAX. IMPURITIES

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

Loss on drying at 105°C................................................................... 0,2 %

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

Bromide (Br)................................................................................... 0,01 %

Chlorate and nitrate (as NO3)........................................................ 0,003 %

Hexacyanoferrate(II) and (III) [Fe(CN)6]........................................ 0,0001 %

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

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

Iodide(I)......................................................................................... 0,002 %

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

As............................................................................................. 0,00004 %

Ba............................................................................................... 0,0005 %

Ca................................................................................................. 0,002 %

Cu............................................................................................... 0,0002 %

Fe................................................................................................ 0,0002 %

Hg......................................................................................... 0,0000005 %

K................................................................................................... 0,005 %

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

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

Pb............................................................................................... 0,0002 %