CASR |
: | 77-92-9 |
Molecular Formula |
: | C6H8O7 |
Molecular Weight |
: | 192.13 |
| Specifications | |
|---|---|
| Appearance: | White or almost white, crystalline powder, colourless crystals or granules.(Note: The product may cause lumps or hardening over the storage). |
| Solubility: | Very soluble in water, freely soluble in ethanol (96%) |
| Melting point: | About 153°C, with decomposition. |
| Identification A (By Chemical test): | The solution should be strongly acidic. |
| Identification B (By IR): | IR spectra of the sample should be concomitant with IR spectra of standard |
| Identification C (By Chemical test): | A red color should develop. |
| Identification D (By Chemical test): | A white precipitate should form. |
| Identification E (By Water): | 1.0% max |
| Appearance of Solution: | The solution should be clear and colorless or not more intensely colored than reference solution Y7, BY7 or GY7. |
| Readily carbonizable substances: | The solution should not be more intensely colored than a mixture of 1ml of red primary solution and 9ml of yellow primary solution. |
| Oxalic acid: | 360ppm max. |
| Sulfates: | 150ppm max |
| Water: | 1.0% max |
| Sulphated ash: | 0.1% max |
| Assay (Anhydrous basis): | 99.5%-100.5% |
