MUCIC ACID Chemical Properties

Melting point:

220-225 °C (dec.)(lit.)

Boiling point:

269.65°C (rough estimate)

Density 

1.5274 (rough estimate)

refractive index 

1.5800 (estimate)

storage temp. 

Store at RT.

solubility 

3.3g/l soluble

form 

Solid

pka

2.99±0.35(Predicted)

color 

White to Off-White

Water Solubility 

Soluble in water.

Merck 

14,4331

BRN 

1728117

CAS DataBase Reference

526-99-8(CAS DataBase Reference)

EPA Substance Registry System

Galactaric acid (526-99-8)

Safety Information

Hazard Codes 

Xi,Xn

Risk Statements 

22-40

Safety Statements 

22-24/25-36/37

WGK Germany 

2

RTECS 

LW5180000

TSCA 

Yes

HS Code 

29181990

Hazardous Substances Data

526-99-8(Hazardous Substances Data)

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

MUCIC ACID Usage And Synthesis

Description

Mucic acid,C₆H₁₀O₈ or HOOC-(CHOH)₄-COOH, (also known as galactaric or meso - galactaric acid) is an aldaric acid obtained by nitric acid oxidation of galactose or galactose - containing compounds like lactose, dulcite, quercite, and most varieties of gum.
It forms a crystalline powder, which melts at 230°C. It is insoluble in alcohol, and nearly insoluble in cold water. Due to the symmetry in the molecule, it is optically inactive even though it has chiral carbon atoms (i.e., it is a meso compound). When heated with pyridine to 140°C, it is converted into allommic acid. When digested with fuming hydrochloric acid for some time it is converted into a furfural dicarboxylic acid while on heating with barium sulfide it is transformed into athiophene carboxylic acid. The ammonium salt yields on dry distillation carbon dioxide, ammonia, pyrrol and other substances. The acid when fused with caustic alkalis yields oxalic acid. With potassium bisulfate mucic acid forms 3-hydroxy-2-pyrone by dehydration and decarboxylation.

Chemical Properties

white to light beige fine crystalline powder

Uses

Mucic acid can be used to replace tartaric acid in self-rising flour or fizzies.

Uses

Mucic acid is used to replace tartaric acid in self-rising flour or fizzies. It is also used as a precursor of adipic acid en route to nylon by a rhenium-catalyzed deoxydehydration reaction. It replaces potassium bitartrate in baking powder and also used for manufacture of granular effervescing salts.

Uses

Substitute for tartaric acid, sequestrant for metalions (calcium, iron), retards hardening of concreteintermediate for synthesis of heterocyclic com-pounds (pyrroles).

Definition

ChEBI: A hexaric acid resulting from formal oxidative ring cleavage of galactose.

MUCIC ACID(526-99-8)Related Product Information

• Potassium oleate
• Sodium lauroylsarcosinate
• Slime remover
• Mucobromic acid
• 2,5-Hexanediol
• 6-HYDROXYCAPROIC ACID
• L-Fucose
• (S)-3-HYDROXYBUTYRIC ACID
• L-THREITOL
• 2-Deoxy-L-ribose
• 1,2,4-Butanetriol
• Isometheptene mucate
• (S)-1,2-Butanediol
• MUCIC ACID
• L-Glyceraldehyde
• 1,2,5-PENTANETRIOL
• 2-Deoxy-D-ribose
• Dulcitol