1 | Appearance | White crystalline powder | White or almost white, crystalline powder. |
2 | Solubility | Passes | Soluble in water, practically insoluble in ethanol (96%) |
3 | Identification A (By IR) | Complies | To Comply the test |
4 | Identification B (By Chemical test) | Complies | No precipitate is produced. |
5 | Identification C (By Chemical test) | Complies | No precipitate is produced. |
6 | Identification D (By Chemical test) | Complies | It gives the reaction of sodium salts. |
7 | Appearance of Solution | Passes | Solution S is clear and colourless. |
8 | pH | 4.55 | 4.0-5.5 (5% w/v solution) |
9 | Impurity A (Nitrilotriacetic acid) | NMT 0.1% | 0.1% max |
10 | Iron (Fe) | NMT 80ppm | 80ppm max |
11 | Heavy metals | NMT 20ppm | 20ppm max |
12 | Assay | 99.22% | 98.5%- 101.0% |