CASR |
: | 5949-29-1 |
Molecular Formula |
: | C6H8O7.H2O |
Molecular Weight |
: | 210.14 |
| Specifications | |
|---|---|
| Appearance/Description: | Colourless, translucent crystals; white or almost white granular to fine crystalline powder. Efflorescent in warm, in dry air.(Note: The product may cause lumps or hardening over the storage). |
| Solubility: | Very soluble in water, freely soluble in alcohol, very slightly soluble in ether |
| Identification by Chemical test: | The solution is strongly acidic |
| Identification (By IR): | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard |
| Identification (By chemical test 1): | A red colour should develop. |
| Identification (By chemical test 2): | A white precipitate should formed |
| Identification (By chemical test 3): | It gives reaction A of citrates |
| Identification (By Water): | 7.5% to 9.0% |
| Identification: | Yields the reactions characteristic of citrates. |
| Appearance of solution: | The solution is clear and colourless or not more intensely coloured than reference solution YS7, BYS7 or GYS7 |
| 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% |
| Sulfate: | NMT 150ppm |
| Limit of oxalic acid: | NMT 360ppm |
| Readily carbonizable substances: | The color of the acid is not darker than that of a similar volume of reference solution. |
| Chloride (Cl): | NMT 0.0005% |
| Oxalate: | No turbidity should appear. |
| Calcium: | NMT 200ppm |
| Iron: | NMT 0.001% |
| Arsenic: | NMT 0.0001% |
| Barium: | Any opalescence produced should not more intense than that of mixture of 5ml of solution A and 5ml of distilled water |
| Water: | 7.5% to 9.0% |
| 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. |
| Heavy metals: | NMT 10 ppm |
