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| CAS No.: | 89-65-6 |
|---|---|
| Name: | D-Isoascorbic acid |
| Molecular Structure: | |
|
|
|
| Formula: | C6H8O6 |
| Molecular Weight: | 176.126 |
| Synonyms: | D-erythro-Hexonicacid, 3-keto-, g-lactone(6CI);Erythorbic acid (7CI);Araboascorbic acid;Araboascorbic acid, D-;D-(-)-Isoascorbic acid;D-Araboascorbic acid;D-Erythorbic acid;D-arabino-Ascorbic acid;E 315;Erycorbin;Glucosaccharonic acid;Isoascorbic acid;Isovitamin C;Mercate 5;Neo-Cebicure;Saccharosonic acid;Erythorbic acid; |
| EINECS: | 201-928-0 |
| Density: | 1.954 g/cm3 |
| Melting Point: | 169-172 °C (dec.)(lit.) |
| Boiling Point: | 552.7 °C at 760 mmHg |
| Flash Point: | 238.2 °C |
| Solubility: | 0.1 g/mL in water |
| Appearance: | Crystalline |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-24/25 |
| PSA: | 107.22000 |
| LogP: | -1.40740 |
- 958254-66-51H-Imidazo[4,5-b]pyridine-2-carboxaldehyde, 1-methyl-, hydrochloride
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| Conditions | Yield |
|---|---|
| With potassium cyanide; nitrogen; water anschl. mit wss. HCl unter Ausschluss von Luft; |
- 21063-40-1
D-arabino-[2]hexulosonic acid methyl ester
- 89-65-6
isoascorbic acid
| Conditions | Yield |
|---|---|
| With manganese; water | |
| With water; iron | |
| With water; sodium hydrogencarbonate |
- 89-65-6
isoascorbic acid
| Conditions | Yield |
|---|---|
| With ethanol; sulfuric acid anschl. mit Dicyclohexylamin und dann mit wss. NaOH; |
- 89-65-6
isoascorbic acid
| Conditions | Yield |
|---|---|
| With methanol; sulfuric acid; water |
- 89-65-6
isoascorbic acid
| Conditions | Yield |
|---|---|
| With methanol; sulfuric acid anschl. mit wss. NaHCO3; | |
| With methanol; sulfuric acid anschl. mit wss. Na2CO3; |
| Conditions | Yield |
|---|---|
| at 60℃; Rate constant; und 70grad; |
| Conditions | Yield |
|---|---|
| With ascorbic acid In phosphate buffer at 20℃; for 24h; pH=7.4; Product distribution; Reduction; |
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Chemistry
Molecular Structure of D-Isoascorbic acid (CAS NO.89-65-6):
IUPAC Name: 2-(1,2-dihydroxyethyl)-4,5-dihydroxyfuran-3-one
Empirical Formula: C6H8O6
Molecular Weight: 176.1241
EINECS: 201-928-0
Melting point: 169-172 °C (dec.)(lit.)
Boiling Point: 552.7 °C at 760 mmHg
Flash Point: 238.2 °C
Index of Refraction: 1.711
Molar Refractivity: 35.26 cm3
Molar Volume: 90.1 cm3
Polarizability: 13.97 10 -24 cm3
Surface Tension: 140.5 dyne/cm
Density: 1.954 g/cm3
Enthalpy of Vaporization: 95.78 kJ/mol
Vapour Pressure: 1.62E-14 mmHg at 25°C
alpha: -17.25 o (c=10, H2O 25 oC)
Storage temp: Store at 0-5°C
Water Solubility: 1g/10mL
Appearance: Crystalline
Merck: 14,5126
Stability: Stable. Combustible. Incompatible with chemically active metals, aluminium, zinc, copper, magnesium, strong bases, strong oxidizing agents.
Product Categories: Food and Feed Additive; Sugar Acids; Vitamin Derivatives; Biochemistry;Sugars; Vitamins; Water Ttreatment Chemicals
Toxicity Data With Reference
| 1. | mma-sat 50 mg/plate | FCTOD7 Food and Chemical Toxicology. 22 (1984),623. | ||
| 2. | dnd-uns:lyms 5 mmol/L | JNSVA5 Journal of Nutritional Science and Vitaminology. 21 (1975),237. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors.
Hazard Codes of D-Isoascorbic acid (CAS NO.89-65-6):
Xi
Risk Statements:
36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements:
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
24/25: Avoid contact with skin and eyes
WGK Germany: 2
RTECS: KF3015000
Specification
D-Isoascorbic acid , with CAS number of 89-65-6, can be called D-erythro-Hexonicacid, 3-keto-, g-lactone(6CI) ; Araboascorbic acid ; Araboascorbic acid, D- ; D-(-)-Isoascorbic acid ; D-Araboascorbic acid ; D-Erythorbic acid ; Glucosaccharonic acid ; Saccharosonic acid .