Assay (Acidim.).......................................................................69,0-70,0 %

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

Density at 20/4..................................................................... 1,410 - 1,420

MAX. IMPURITIES

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

Clarity and colour................................................................................. p/t.

Residue on ignition (as SO4)....................................................... 0,0005 %

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

Chloride (Cl).............................................................................. 0,00005 %

Sulphate (SO4)............................................................................ 0,0001 %

Heavy metals (as Pb)................................................................ 0,00002 %

As........................................................................................... 0,000001 %

Cu............................................................................................. 0,00002 %

Fe.............................................................................................. 0,00002 %

Pb............................................................................................. 0,00002 %

Zn............................................................................................. 0,00002 %