89-65-6 - Names and IdentifiersNameD-Isoascorbic acidSynonymsFEMA 2410Isovitamin CISOVITAMIN CE
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| Name | D-Isoascorbic acid |
| Synonyms | FEMA 2410 Isovitamin C ISOVITAMIN C Erythorbic Acid ISOASCORBIC ACID araboascorbicacid D-Isoascorbic acid D-Araboascorbic acid d-arabino-ascorbicacid d-erythro-3-ketohexonicacidlactone 3-keto-d-erythro-hexonicacigamma-lactone 2,3-didehydro-d-erythro-hexono-1,4-lactone D-erythro-Hex-2-enonic acid, gamma-lactone (5R)-5-(1,2-dihydroxyethyl)-3,4-dihydroxy-5-methyl-furan-2-one |
| CAS | 89-65-6 |
| EINECS | 201-928-0 |
| InChI | InChI=1/C7H10O6/c1-7(3(9)2-8)5(11)4(10)6(12)13-7/h3,8-11H,2H2,1H3/t3?,7-/m1/s1 |
| InChIKey | CIWBSHSKHKDKBQ-JLAZNSOCSA-N |
| Molecular Formula | C6H8O6 |
| Molar Mass | 176.12 |
| Density | 1.3744 (rough estimate) |
| Melting Point | 169-172 °C (dec.) (lit.) |
| Boling Point | 227.71°C (rough estimate) |
| Specific Rotation(α) | -17.25 º (c=10, H2O 25 ºC) |
| Flash Point | 212.9°C |
| Water Solubility | 1g/10mL |
| Solubility | Soluble in water, ethanol and pyridine, soluble in acetone, slightly soluble in glycerin, insoluble in ether and benzene. |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Crystallization |
| Color | White to slightly yellow |
| Merck | 14,5126 |
| BRN | 84271 |
| pKa | 4.09±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Stability | Stable. Combustible. Incompatible with chemically active metals, aluminium, zinc, copper, magnesium, strong bases, strong oxidizing agents. |
| Sensitive | Sensitive to light |
| Refractive Index | -17.5 ° (C=10, H2O) |
| MDL | MFCD00005378 |
| Physical and Chemical Properties | White to light yellow crystals or crystalline powder. Odorless, sour. Gradually blackened under light. In a dry state, it is quite stable in the air. But it deteriorates rapidly in solution and in the presence of air. Melted and decomposed at 164~172 ℃. This strain is an isomer of ascorbic acid, which is chemically similar to ascorbic acid, but has little physiological activity of ascorbic acid (only about 1/20). The oxidation resistance is better than ascorbic acid, the price is also cheaper, but the heat resistance is poor. It has strong reducibility, and slowly colors and decomposes when exposed to light. Heavy metal ions promote its decomposition. Easily soluble in water (40g/100 m1). Soluble in ethanol (5g/100ml). Insoluble in glycerin. Insoluble in ether and benzene. |
| Use | Used as a food antioxidant, with preservation, the role of quality |
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 2 |
| RTECS | KF3015000 |
| TSCA | Yes |
| HS Code | 29329990 |
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