D-Isoascorbic acid
CAS 89-65-6
EC 201-928-0
Formula C6H8O6
MW 176.12 g/mol
Organic Acids Personal Care & CosmeticsFood & NutritionPharmaceuticals & Healthcare Antioxidant & StabilizerFlavoring & Acidulant
Description
D-Isoascorbic acid (CAS 89-65-6), also known as erythorbic acid and sold under trade names including Erycorbin and Mercate 5, is a stereoisomer of ascorbic acid with significantly lower vitamin C activity. It is classified as an organic acid with the molecular formula C6H8O6 and does not carry an E-number designation in the EU.
In food processing, it functions as an oxygen scavenger, retarding oxidative rancidity and colour degradation in cured meats, beverages, and frozen fish by donating electrons to free radicals before they attack lipids or pigments. In personal care formulations, it acts as a skin conditioner and antioxidant, helping to stabilise emulsions and protect active ingredients from oxidative breakdown.
D-Isoascorbic acid is available in food-grade crystalline and crystalline powder forms, manufactured in compliance with FCC specifications and subject to REACH registration requirements for EU supply. It is classified under HS code 29329990 for import and export purposes.
In food processing, it functions as an oxygen scavenger, retarding oxidative rancidity and colour degradation in cured meats, beverages, and frozen fish by donating electrons to free radicals before they attack lipids or pigments. In personal care formulations, it acts as a skin conditioner and antioxidant, helping to stabilise emulsions and protect active ingredients from oxidative breakdown.
D-Isoascorbic acid is available in food-grade crystalline and crystalline powder forms, manufactured in compliance with FCC specifications and subject to REACH registration requirements for EU supply. It is classified under HS code 29329990 for import and export purposes.
Physical Properties
| Melting Point | 174 °C (decomp) |
| Boiling Point | 227.71°C (rough estimate) |
| Density | 1.654 g/cm³ |
| Appearance | Crystalline |
| Color | White to slightly yellow |
| Odor | odorless |
| Form | Crystals or Crystalline Powder |
| Water Solubility | 1g/10mL |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | -17.5 ° (C=10, H2O) |
| Log P | -1.69 at 25℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H315H319H335
P
P261P264P271P280P319P321P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29329990 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
Erythorbic acidMercate 5ErycorbinIsovitamin CIsoascorbic acidD-ERYTHORBIC ACIDSaccharosonic acidD-Araboascorbic acid
Related Products
Raw Materials
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