CASR |
: | 50-81-7 |
Molecular Formula |
: | C6H8O6 |
Molecular Weight |
: | 176.13 |
| Specifications | |
|---|---|
| Appearance: | White or almost white, crstalline powder or colorless crystal, becoming discoloured on exposure to air and moisture. |
| Solubility: | Freely soluble in water, sparingly soluble in ethanol (96%) |
| Identification A (By UV spectrophotometry): | Absorption maximum at : 243 nm, Specific absorbance at the absorption maximum : 545 to 585. |
| Identification B (By IR): | IR spectra of the sample should be concomittant with IR spectra of the standard. |
| Identification C (By pH): | 2.1 - 2.6 |
| Appearance of solution: | Solution should be clear and not more intensely colored than reference solution BY7. |
| Impurity E (Oxalic acid): | NMT 0.2% |
| Related substances Impurity C (L-sorbosonic acid): | NMT 0.15% |
| Related substances Impurity D (Methyl L-sorbosonate): | NMT 0.15% |
| Related substance (Unspecified impurities): | NMT 0.10% |
| Related substances: Sum of impurities other than C and D: | NMT 0.2% |
| Copper (Cu): | NMT 5 ppm |
| Iron: | NMT 2 ppm |
| Sulfated ash: | NMT 0.1% |
| Assay: | 99.0% - 100.5% |
