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

pH of 5% solution.......................................................................... 4,5-5,5

MAX. IMPURITIES

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

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

Pyridine and homologues............................................................. 0,001 %

Phosphate (PO4)......................................................................... 0,0002 %

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

Sulphate (SO4).............................................................................. 0,002 %

Iodide (I)........................................................................................ 0,001 %

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

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

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

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

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

Cr................................................................................................ 0,0005 %

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

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

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

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

Na................................................................................................. 0,005 %

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

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

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