DL-Malic acid Chemical Properties

Melting point:

131-133 °C(lit.)

Boiling point:

150℃[at 101 325 Pa]

Density 

1,609 g/cm³

vapor density 

4.6 (vs air)

vapor pressure 

<0.1 mm Hg ( 20 °C)

FEMA 

2655 | L-MALIC ACID

Flash point:

203°C

storage temp. 

Refrigerator

solubility 

methanol: 0.1 g/mL, clear, colorless

form 

Solid

pka

pK1:3.458;pK2:5.097 (25°C)

color 

White to Off-White

Water Solubility 

500g/L at 25℃

Stability:

Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates.

LogP

-1.3 at 24℃

CAS DataBase Reference

617-48-1(CAS DataBase Reference)

EPA Substance Registry System

Butanedioic acid, hydroxy-(617-48-1)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-37/38-41-42/43-34

Safety Statements 

26-39

WGK Germany 

1

RTECS 

ON7175000

MSDS

• Language:English Provider:DL-2-Hydroxybutanedioic acid
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

DL-Malic acid Usage And Synthesis

Description

White or nearly white, crystalline powder or granules having a strongly acid taste. One g dissolves in 0.8 mL of water and in 1.4 mL of alcohol. Its solutions are optically inactive. It melts at about 130°.

Chemical Properties

white crystalline powder

Uses

DL-malic acid is primarily used in the food and beverage industry.

Definition

ChEBI: Malic acid is a 2-hydroxydicarboxylic acid that is succinic acid in which one of the hydrogens attached to a carbon is replaced by a hydroxy group. It has a role as a food acidity regulator and a fundamental metabolite. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a succinic acid. It is a conjugate acid of a malate(2-) and a malate.

Application

DL-Malic acid is used as a food additive. It is a component of some artificial vinegar flavors. Further, it is used in the preparation of chiral compounds, including κ-opioid rece. It is utilized for chiral resolution by ligand-exchange capillary electrophoresis.

Flammability and Explosibility

Non flammable

Purification Methods

Crystallise the acid from acetone, then from acetone/CCl4, or from ethyl acetate by adding pet ether (b 60-70o). Dry it at 35o under 1mm pressure to avoid formation of the anhydride. [Beilstein 3 IV 1124.]

DL-Malic acid(617-48-1)Related Product Information

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