Appearance |
White or almost white, crystalline powder, colourless crystals or granules, efflorescent
|
Assay (by NaOH titration) |
99.5 -100.5% (on anhydrous substance)
|
Solubility |
Very soluble in water, freely soluble in ethanol (96 per cent)
|
Identifications |
Passes BP test
|
Appearance of solution |
Passes BP test
|
Residue on ignition (at 800°C) |
Max 0.02%
|
Insoluble matter (13.2% in water) |
Max 0.005%
|
Chloride (Cl) |
Max 0.001%
|
Oxalate (as C2H2O4) - as per ACS |
Passes test
|
Oxalic acid |
Max 0.036%
|
Substance carbonizable by hot H2SO4 |
Passes test
|
Lead (Pb) |
Max 0.0002%
|