Test |
Limits |
Method Ref. |
| Appearance |
White to almost white powder, Hygroscopic |
Visual |
| Purity (On dry basis) by NaOH titration |
99.0 % w/w Min. |
NQA 906 |
| Loss on drying by moisture analyzer at 80ºC for 10 min. |
1.0 % w/w Max. |
NQA 513 |
| pH of 5% aqueous solution |
2.5 to 3.5 |
NQA 511 |
| Melting point by oil bath |
Above 151°c with decomposition |
NQA 517 |
| Solubility |
Soluble in Methanol & in Water |
NQA 525 |
