1 | Description | Colourless hygroscopic crystals with faint odour. | Colourless hygroscopic crystals with faint odour. |
2 | Solubility(10% aq) | Complies | Clear and colourless solution. |
3 | Assay | 99.56% | min. 99.00% |
4 | pH(5% aq soln) | 6.95 | 6.5 - 7.5 |
5 | UV absorbance profile (10% in water, 10mm cell)@ 250nm | 0.018 | 0.05 max |
6 | UV absorbance profile (10% in water, 10mm cell)@ 260nm | 0.007 | 0.04 max |
7 | UV absorbance profile (10% in water, 10mm cell)@ 270nm | 0.005 | 0.03 max |
8 | UV absorbance profile (10% in water, 10mm cell)@ 280nm | 0.006 | 0.02 max |
9 | UV absorbance profile (10% in water, 10mm cell)@ 500nm | 0.001 | 0.02 max |
10 | Water (By KF) | 0.7% | 1.0% max |
11 | Sulphated ash | 0.005% | 0.01% max |