Minimum assay.............................................................................. 85,0 %

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

MAX. IMPURITIES

Loss on ignition................................................................................ 1,5 %

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

Oxidable sulphur compounds.............................................................. p/t.

Sedimentation...................................................................................... p/t.

Soluble salts in acid......................................................................... 0,3 %

Soluble barium salts (as Ba) according to Ph. Eur....................... 0,001 %

Soluble barium salts (as Ba) according to BP...................................... p/t.

Soluble barium salts (as Ba) according to USP........................... 0,001 %

Acidity or alkalinity............................................................................... p/t.

Phosphate (PO4)........................................................................... 0,005 %

Sulphide................................................................................... 0,00005 %

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

As............................................................................................. 0,00008 %