- 2-Pentenoic acid, 2-methyl-, (2E)-
- (E)-2-Methyl-2-pentenoic acid
- (E)-2-Methyl-2-pentenoyl chloride
- (E)-2-Methylpent-2-en-1-oic acid
Colorless to pale yellow liquid. Fruity odor.
Registry Numbers and Inventories.
S: 26 36/37/39 45
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
0.055 (25 C)
Vapor density (air=1)
0.987 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
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. Wear appropriate protective gloves and clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation.
Stable under normal temperatures and pressures.
Strong acids, strong bases, strong oxidizing .
Oxides of carbon.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Extinguish using water spray, dry chemical, carbon dioxide, or chemical foam.
Containers can build up pressure if exposed to heat and/or fire.
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Causes gastrointestinal tract burns.
Causes chemical burns to the respiratory tract.
If swallowed, do NOT induce vomiting. Get medical aid immediately. If victim is fully conscious, give a cupful of water. Never give anything by mouth to an unconscious person.
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid immediately. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed.