CASR |
: | 77-92-9 |
Molecular Formula |
: | C6H8O7 |
Molecular Weight |
: | 192.13 |
| Specifications | |
|---|---|
| Appearance/Description: | Colorless, translucent crystals; white or almost white granular to fine crystalline powder.(Note: The product may cause lumps or hardening over the storage). |
| Solubility: | Very soluble in water, freely soluble in ethanol (96%),very slightly soluble in ether. |
| Melting point: | About 153°C, with decomposition. |
| Identification (By IR): | IR spectra of the sample should be concomitant with IR spectra of standard |
| Identification (By chemical test 1): | The solution should be strongly acidic. |
| Identification (By chemical test 2): | A red colour should develop. |
| Identification (By chemical test 3): | A white precipitate should form. |
| Identification (By Water): | NMT 1.0% |
| Appearance of Solution: | The solution should be clear and colourless or not more intensely coloured than reference solution Y7, BY7 or GY7. |
| Clarity of solution: | The sample solution should show the same clarity as that of water or its opalescence is not more pronounced than standard suspension A. |
| Colour of solution: | The sample solution should not more intensely colored than standard solutions |
| Readily carbonizable substances: | The solution should not be more intensely coloured than reference standards |
| Oxalic acid: | NMT 360ppm |
| Sulfates: | NMT 150ppm |
| Water: | NMT 1.0% |
| Sulphated ash / Residue on ignition: | NMT 0.1% |
| Assay (Anhydrous basis): | 99.5%-100.5% |
