CASR |
: | 5949-29-1 |
Molecular Formula |
: | C6H8O7.H2O |
Molecular Weight |
: | 210.14 |
| Specifications | |
|---|---|
| Description: | Colourless crystals or a white, crystalline powder; slightly efflorescent in warm, dry air.(Note: The product may cause lumps or hardening over the storage). |
| Solubility: | Very soluble in water, freely soluble in ethanol (95%), Sparingly soluble in ether. |
| Identification A (By IR): | IR spectra of the sample should be concomitant with IR spectra of the corresponding standadrd |
| Identification B (By Chemical test): | A white precipitate should form. |
| Identification C (By Chemical test): | A 10.0% w/v solution is strongly acidic. |
| Appearance of Solution: | The solution is clear and not more intensely coloured than reference solution YS7, BYS7 or GYS7. |
| Arsenic (As): | NMT 1ppm |
| Barium(Ba): | Any opalescence produced is not more intense than that of mixture of 5ml of solution A and 5ml of distilled water. |
| Calcium (Ca): | NMT 200ppm |
| Heavy metals: | NMT 10ppm |
| Iron (Fe): | NMT 50ppm |
| Chlorides: | NMT 50ppm |
| Sulphate (SO4): | NMT 150ppm |
| Oxalic acid: | Any pink colour produced is not more intense than that produced by carrying out the test using 0.2mg of oxalic acid dissolved in 4ml of water. |
| Readily carbonizable substances: | Any colour prodced is not more intense than that of a mixture of 1.0 ml of CCS and 9.0 ml of FCS. |
| Sulphated ash: | NMT 0.1% |
| Water: | 7.5% to 9.0% |
| Assay (Anhydrous basis): | Not less than 99.0% and Not more than 101.0% |
