Methyl 3-methyl-2-butenoate

  • 3-Methyl-2-butenoic acid methyl ester
  • 3-Methylcrotonic acid methyl ester
  • Methyl senecioate
  • Methyl dimethylacrylate
  • Methyl 3,3-dimethylacrylate
  • Methyl .beta.-methylcrotonate
Formula
C6H10O2
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
924-50-5
EC (EINECS/ELINCS)
213-107-4
16 29 33
UN (DOT)
1992
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H10O2
Formula mass
114.14
Melting point, °C
114
Boiling point, °C
136.5
Vapor pressure, mmHg
7.4 (25 C)
Critical temperature
313
Critical pressure
32.9
Density
0.935 g/cm3 (20 C)
Solubility in water
11 g/L (25 C)
Refractive index
1.432 (20<sup>o</sup>C)
Partition coefficient, pKow
1.869
Heat of vaporization
37.39 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Keep away from heat, sparks, and open flame. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Small spills/leaks
Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools and transport outdoors. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Strong oxidizing agents.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
37
Fire fighting
For small (incipient) fires, use media such as alcohol foam, dry chemical, or carbon dioxide. For large fires, apply water from as far as possible. Use very large quantities (flooding) of water applied as a mist or spray; solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Vapor may travel considerable distance to source of ignition and flash back. Emits toxic fumes under fire conditions.

Health.
Exposure effects
May be harmful by inhalation, ingestion, or skin absorption. May cause irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
1992
Response guide
Hazard class
3
Packing Group
II