Complaint
| Item | Quality Standards | |||
| Characters | White or almost white,crystalline powder, colourless crystals or granules. Odorless, has a strongly acid taste. Very soluble in water,freely soluble in ethanol. | |||
| Identification | Pass test | |||
| Appearance of solution | Pass test | |||
| Assay | 99.5%-100.5% | |||
| Water | ≤0.5% | |||
| Readily Carbonisable Substances | Pass test | |||
| Sulphate Ash (Residue on Ignition) | ≤0.05% | |||
| Sulphate | ≤150 mg/kg | |||
| Oxalate | ≤100 mg/kg | |||
| Lead | ≤0.5 mg/kg | |||
| Arsenic | ≤1 mg/kg | |||
| Mercury | ≤1 mg/kg | |||
| Aluminium | ≤0.2 mg/kg | |||
| Heavy Metals (as Pb) | ≤10 mg/kg | |||
| Bacteria Endotoxin | <0.5 IU/mg | |||
