D-Isoascorbic acid

Description

ERYTHORBIC ACID · CAS 89-65-6 · C6H8O6. UNII 311332OII1. Melting Point: Decomposes at 174 °C; Decomposition: Decomposition at 184 °C..

Identification

CAS Registry Number	89-65-6
PubChem CID	54675810
Molecular formula	C6H8O6
IUPAC name	(2R)-2-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one
UNII (FDA)	311332OII1
FEMA number	2410

Computed Descriptors

Molecular Weight	176.12
XLogP3	-1.6
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	2
Exact Mass	176.03208797
Monoisotopic Mass	176.03208797
Topological Polar Surface Area	107
Heavy Atom Count	12
Formal Charge	0

Physical & Chemical Properties

Melting Point	Decomposes at 174 °C
Decomposition	Decomposition at 184 °C.

Physical description & handling notes

• Other Solid; Dry Powder
• White to slightly yellow crystalline solid which darkens gradually on exposure to light
• Shiny solid; [Merck Index] White odorless powder; [MSDSonline]
• Shiny granular crystals from water or dioxane
• About 164 °C to 172 °C with decomposition
• Soluble in alcohol, pyridine; moderately soluble in acetone; slightly soluble in glycerol

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, CURING OR PICKLING FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ANTIOXIDANT: Food Additives ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, CURING OR PICKLING AGENT, FLAVOR ENHANCER, FLAVOR NOT SPECIFIED TRS 806-JECFA 37/9
GHS notification summary	51.2% (310 / 605)

GHS Hazard Classification

GHS notification summary	51.2% (310 / 605)
Reported hazard statements	H315 (46%), H319 (46.3%), H335 (45.6%)

Documented Uses

• CIR ingredient: Erythorbic Acid
• Used as an antioxidant (brewing industry), reducing agent (photography), and flavor; [HSDB] Used as antimicrobial agent for food; [Merck Index] An isomer of ascorbic acid used as a food antioxidant; [REPROTOX]
• Photographic Processing [Category: Other]
• Erythorbic acid is widely used in food applications as an antioxidant. It is also used in oral pharmaceutical applications as an antioxidant.
• Table: Reported uses (ppm) for Erythorbic acid [Table#1683]
• Antioxidant especially in brewing industry; reducing agent in photography

Synonyms

Erythorbic acid; 89-65-6; Isoascorbic acid; D-Isoascorbic acid; D-Araboascorbic acid; D-Erythorbic acid; Araboascorbic acid; Isovitamin C; Glucosaccharonic acid; Erycorbin; Neo-cebicure; Saccharosonic acid; Mercate 5; FEMA Number: 2410; D-erythro-3-Ketohexonic acid lactone; FEMA No. 2410

Frequently Asked Questions

What are the CAS number and molecular formula of ERYTHORBIC ACID?

CAS 89-65-6; molecular formula C6H8O6; molecular weight — g/mol.

What other names is ERYTHORBIC ACID known by?

Erythorbic acid, 89-65-6, Isoascorbic acid, D-Isoascorbic acid, D-Araboascorbic acid, D-Erythorbic acid.

What is the regulatory status of ERYTHORBIC ACID?

Documented regulatory listings: FDA Substance added to food: ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, CURING OR PICKLING ; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; ANTIOXIDANT: Food Additives.

Is ERYTHORBIC ACID classified as hazardous?

51.2% of GHS notifications report no hazard classification (310 of 605).

What are the key physical properties of ERYTHORBIC ACID?

Melting Point: Decomposes at 174 °C; Decomposition: Decomposition at 184 °C..

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.