Assay (Arg.)calc. a.d.s...........................................................99,5-100,5%

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

pH of 5% solution.......................................................................... 4,6-6,0

MAX. IMPURITIES

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

Loss on drying at 100°C................................................................... 0,5 %

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

Residual solvents (Ph.Eur./USP)........................................................... p/t.

Acidity-alkalinity................................................................................... p/t.

Bromide and iodide.............................................................................. p/t.

Phosphate (PO4)........................................................................... 0,002 %

Sulphate (SO4).............................................................................. 0,005 %

Thiocyanate.......................................................................................... p/t.

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

As............................................................................................... 0,0001 %

Ca................................................................................................... 0,02 %

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

Fe.................................................................................................. 0,002 %

Mg................................................................................................ 0,005 %

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

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