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

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

pH of 3,3% solution....................................................................... 3,8-4,8

MAX. IMPURITIES

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

Insoluble matter in C2H5OH.................................................................. p/t.

Loss on drying.................................................................................. 0,5 %

Residue on ignition (CH3OH+HCl) (as SO4)....................................... 0,1 %

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

Organic substances............................................................................. p/t.

Chloride (Cl).................................................................................. 0,002 %

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

Sulphate (SO4).............................................................................. 0,045 %

Heavy metals (as Pb).................................................................. 0,0015 %

As............................................................................................... 0,0005 %

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

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

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

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

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