| 1 | Appearance/Description | White crystalline powder. | White or almost white crystalline powder. | USP/ Ph. Eur |
| 2 | Solubility | Complies | Soluble in water, practically insoluble in ethanol (96%) | USP/ Ph. Eur |
| 3 | Identification A (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of standard | USP/ Ph. Eur |
| 4 | Identification B (By Chemical test 1) | Complies | No yellow precipitate should form. | Ph. Eur |
| 5 | Identification B (By Chemical test 2) | Complies | No precipitate should form. | Ph. Eur |
| 6 | Identification B (By Chemical test 3) | Complies | The red color should discharge, leaving a yellowish solution. | USP |
| 7 | Identification C (By Chemical test) | Complies | No precipitate should form. | Ph. Eur |
| 8 | Identification (For sodium test A) | Complies | A dense white precipitate should form. | USP/ Ph. Eur |
| 9 | Appearance of Solution | Complies | Solution S should be clear and colorless. | Ph. Eur |
| 10 | pH | 4.36 | 4.0-5.5 | USP/ Ph. Eur |
| 11 | Impurity A (Nitrilotriacetic acid) | 0.019% | NMT 0.1% | USP / Ph. Eur |
| 12 | Calcium (Ca) | Complies | No precipitate should form. | USP |
| 13 | Iron (Fe) | Less than 80 ppm | NMT 80ppm | Ph. Eur |
| 14 | Assay (on dried basis) | 99.61% | 99.0% - 101.0% | USP |
| 15 | Assay | 99.52% | 98.5%-101.0% | Ph.Eur |
| 16 | Loss on drying at 150° for 6 Hr | 9.19% | 8.7%-11.4% | USP |