Assay (calc. a.d.s.).................................................................98,0-102,0%
Identity according to Pharmacopoeias................................................ p/t.
Melting range............................................................................ 148-150°C
MAX. IMPURITIES
Appearance of solution........................................................................ p/t.
Insoluble matter in C2H5OH.................................................................. p/t.
Residue on ignition (as SO4)............................................................. 0,1 %
Loss on drying at 105°C................................................................... 0,5 %
Residual solvents (Ph.Eur./USP)............................................................ p/t
Gallic Acid (T.L.C.)............................................................................ 0,5 %
Total Chlorine (as Cl)....................................................................... 0,02 %
Chloride (Cl).................................................................................... 0,01 %
Heavy Metals (as Pb).................................................................... 0,001 %
Zn............................................................................................... 0,0025 %
