CASR |
: | 5949-29-1 |
Molecular Formula |
: | C6H8O7.H2O |
Molecular Weight |
: | 210.14 |
| Specifications | |
|---|---|
| Description: | Colourless, translucent crystals or white or almost white granular to fine crystalline powder, efflorescent. |
| Solubility: | Very soluble in water, freely soluble in alcohol and ethanol(96%), very slightly soluble in ether, |
| Identification (By chemical test 1): | The solution is strongly acidic. |
| Identification (By IR): | IR spectra of the sample should be concomitant with IR spectra of the corresponding standadrd |
| Identification (By chemical test 2): | A red colour develops. |
| Identification (By chemical test 3): | A white precipitate is formed. |
| Identification (By Water): | 7.5% to 9.0% |
| Appearance of solution: | The solution is clear and colourless or not more intensely coloured than reference solution Y7, BY7 or GY7. |
| Clarity of solution: | The sample solution shows the same clarity as that of water or its opalescence is not more pronounced that standard suspension A. |
| Colour of solution: | The sample solution is not more intensely colored than water or standard solutions A, B, and C . |
| Assay (Anhydrous basis): | 99.5% - 100.5% |
| Residue on ignition /Sulfated ash: | NMT 0.1% |
| Sulphate(SO4): | NMT 0.015% (NMT 150 ppm) |
| Limit of oxalic acid: | NMT 0.036% (NMT 360 ppm) |
| Readily carbonizable substances: | The color of the acid should not be darker than that of a similar volume of matching reference solution A (fluid K) or reference solution B. |
| Water: | 7.5% to 9.0% |
