Assay (Arg.) (calc. a.a.s.).......................................................98,5-101,0%

Identity according to Pharmacopoeias................................................ p/t.

T.L.C..................................................................................................... p/t.

Specific rotation [a]20/D c=11, (in HCl 6 mol/l)

(calc. a.a.s.).........................................................................+9,2 to +10,6°

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

MAX. IMPURITIES

Appearance of solution........................................................................ p/t.

Insoluble matter in H2O......................................................................... p/t.

Loss on drying at 150°C...........................................................7,0-10,0 %

Residue on ignition (as SO4)............................................................. 0,1 %

Sulphate (SO4)................................................................................ 0,03 %

Ammonium (NH4)............................................................................ 0,02 %

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

As............................................................................................. 0,00015 %

Cu................................................................................................. 0,001 %

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

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

Pb................................................................................................. 0,001 %