1 | Description | A clear, colourless, syrupy liquid; corrosive, when kept at a low temperature it may solidify, producing a mass of a colourless crystals which do not melt untill the temperature reaches 28°C | A clear, colourless, syrupy liquid; corrosive, when kept at a low temperature it may solidify, producing a mass of a colourless crystals which do not melt until the temperature reaches 28°C |
2 | Solubility | Complies | Miscible with water and with ethanol(95%) |
3 | Identification A | Complies | The solution is strongly acidic. |
4 | Identification B (Phosphate 1) | Complies | A yellow precipitate should form whose colour does not change by boiling and which dissolves on addition of ammonia |
5 | Identification B (Phosphate 2) | Complies | A yellow color should develop |
6 | Appearance of Solution | Complies | Clear and colourless solution. |
7 | Arsenic (As) | Less than 2ppm | NMT 2ppm |
8 | Heavy metals | Less than 10ppm | NMT 10ppm |
9 | Iron (Fe) | Less than 60ppm | NMT 60ppm |
10 | Chloride (Cl) | Less than 50ppm | NMT 50ppm |
11 | Sulphate (SO4) | Less than 100ppm | NMT 100ppm |
12 | Alkali Phosphates | Complies | No turbidity should produced. |
13 | Aluminium and calcium | Complies | The solution remains clear. |
14 | Hypophosphorus acid and phosphorous acid | Complies | The appearance of the solution does not change. |
15 | Assay | 85.9% | 84.0%-90.0% w/w |