Product Identification

Product Name

2-Methylsuccinic acid

Synonyms

,2-Propanedicarboxylic acid
2-Methylbutane-1,4-dioic acid
Methylbutanedioic acid
Methylsuccinic acid

CAS

498-21-5

Formula

C5H8O4

Molecular Weight

132.11000000000001

EINECS

207-857-1

Beilstein/Gmelin

1722946

Beilstein Reference

4-02-00-01948

Physical and Chemical Properties

Appearance

White or yellowish crystals or beige powder.

Solubility in water

Very soluble

Melting Point

115 - 116

Boiling Point

237

Vapor Pressure

0.016 (25 C)

Density

1.4105 g/cm3

pKa/pKb

4.27 (pKa)

Partition Coefficient

-.24

Heat Of Vaporization

52.1 kJ/mol

Heat Of Combustion

-2175 kJ/mol

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a cool, dry place. Store in a tightly closed container.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause irritation of the digestive tract. Low hazard for usual industrial handling.

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

111

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Incompatibilities

Oxidizing agents, reducing agents, bases.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, carbon dioxide.