Product Identification

Product Name

3-Methyl-2-butenoic acid ethyl ester

Synonyms

Ethyl 3,3-dimethylacrylate
Ethyl 3-methyl-2-butenoate
Ethyl 3-methylcrotonate
Ethyl dimethylacrylate
Ethyl isobutenoate
Ethyl isopropylideneacetate

CAS

638-10-8

Formula

C7H12O2

Molecular Weight

128.19

EINECS

211-319-1

RTECS

GQ5750000

RTECS Class

Other

Beilstein/Gmelin

1744854

Beilstein Reference

4-02-00-01556

Physical and Chemical Properties

Solubility in water

Insoluble

Boiling Point

152 - 153

Vapor Pressure

3.3 (25 C)

Density

0.922 g/cm3 (21 C)

Heat Of Vaporization

39.0 kJ/mol

Usage

Food additive for flavor.

Refractive Index

1.4359 (20 C)

First Aid Measures

Ingestion

Seek medical assistance.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.

Skin

Remove and isolate contaminated clothing and shoes. Wash skin with soap and water. Flush with running water for at least 20 minutes

Eyes

Flush with running water for at least 20 minutes.

Handling and Storage

Storage

Keep tightly closed. Keep away from heat, sparks, and open flame. Store in a cool dry place.

Hazards Identification

Inhalation

May cause irritation or burns.

Skin

See Inhalation.

Eyes

See Inhalation.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.

EC Risk Phrase

10

EC Safety Phrase

16 29 33

UN (DOT)

3272

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Fire Fighting Measures

Flash Point

34

Fire Fighting

Extinguish using Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.

Stability and Reactivity

Incompatibilities

Acids, Bases, Oxidizing agents, Reducing agents.

Decomposition

Carbon monoxide, Carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

3272

Hazard Class

3