Product Identification

Product Name

(E)-2-Methylpent-2-en-1-oic acid

Synonyms

(E)-2-Methyl-2-pentenoic acid
(E)-2-Methyl-2-pentenoyl chloride
(E)-2-Methylpent-2-en-1-oic acid
(E)-2-Methylpent-2-enoic acid
2-Pentenoic acid, 2-methyl-, (2E)-

CAS

16957-70-3

Formula

C6H10O2

Molecular Weight

114.14

EINECS

241-026-4

Physical and Chemical Properties

Appearance

Colorless to pale yellow liquid. Fruity odor.

Solubility in water

Very soluble

Melting Point

25

Boiling Point

214

Vapor Pressure

0.055 (25 C)

Density

0.987 g/cm3 (20 C)

pKa/pKb

5.00 (pKa)

Partition Coefficient

1.51

Heat Of Vaporization

49.83 jK/mol

Vapor Density

>1

First Aid Measures

Ingestion

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.

Inhalation

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.

Skin

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.

Eyes

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.

Handling and Storage

Storage

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

Hazards Identification

Ingestion

Causes gastrointestinal tract burns.

Inhalation

Causes chemical burns to the respiratory tract.

Skin

Causes burns

Eyes

Causes burns

Hazards

Containers can build up pressure if exposed to heat and/or fire.

EC Risk Phrase

R: 34

EC Safety Phrase

S: 26 36/37/39 45

UN (DOT)

3261

Exposure Controls/Personal Protection

Personal Protection

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.

Respirators

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.

Fire Fighting Measures

Flash Point

107

Fire Fighting

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.

Accidental Release Measures

Small spills/leaks

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.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids, strong bases, strong oxidizing .

Decomposition

Oxides of carbon.

Combustion Products

During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.

Transport Information

UN Number

3261

Hazard Class

8

Packing Group

III