| ≥1 piece |
Appearance of solution Not more opalescent than reference suspension II and not more intensely coloured than reference solution BY6
Acidity or Alkalinity Shall pass the test
Chlorides Max. 200 ppm
Sulphates Max. 400 ppm
Barium Shall pass the test
Iron Max. 50 ppm
Magnesium and alkali salts Max. 1 %
Heavy metals Max. 10 ppm
Loss on drying 22.0 % to 27.0 %
Assay as C6 H10CaO6 (On dried substance) 98.0 % - 102.0 %