Assay (Acidim.)......................................................................99,0-103,0%
Identity according to Pharmacopoeias................................................ p/t.
pH of 4% solution.......................................................................... 9,0-9,6
MAX. IMPURITIES
Appearance of solution........................................................................ p/t.
Insoluble matter in H2O................................................................. 0,025 %
Residual solvents (Ph.Eur./USP)............................................................ p/t
Carbonate and Hydrogen Carbonate................................................... p/t.
Chloride (Cl).................................................................................. 0,005 %
Phosphate (PO4)........................................................................... 0,005 %
Sulphate (SO4).............................................................................. 0,005 %
Ammonium (NH4).......................................................................... 0,001 %
Heavy metals (as Pb).................................................................... 0,002 %
As............................................................................................... 0,0005 %
Ca................................................................................................... 0,01 %
Cu................................................................................................. 0,001 %
Fe.................................................................................................. 0,001 %
Mg................................................................................................ 0,005 %
Ni.................................................................................................. 0,001 %
Pb................................................................................................. 0,001 %
