Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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2-Butenoic acid(3724-65-0)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
2-Butenoic acid
Synonyms
(E)-2-Butenoic acid
3-Methylacrylic acid
a-Crotonic acid
b-Ethylacrylic acid
But-2-enoic acid
trans-2-Butenoic acid
CAS
3724-65-0
Formula
C4H6O2
Molecular Weight
86.1
EINECS
223-077-4
RTECS
GQ2800000
RTECS Class
Primary Irritant
Beilstein/Gmelin
1098434
Beilstein Reference
4-02-00-01498

Physical and Chemical Properties

Appearance
A white crystalline solid. Shipped as either a solid or liquid.
Solubility in water
94 g/L
Melting Point
15
Boiling Point
181
Vapor Pressure
0.51 (25 C)
Density
1.018 g/cm3 (15 C)
pKa/pKb
4.69 (pKa)
Partition Coefficient
.72
Heat Of Vaporization
72.2 kJ/mol
Heat Of Combustion
-2000 kJ/mol
Usage
Manufacture of copolymers with vinyl acetate used in lacquers & paper sizing, manufacture of softening agents for synthetic rubber, in medicinal chemistry, eg, manufacture of dl-threonine, vit a.
Vapor Density
2.97
Refractive Index
1.4455 (20 C)

First Aid Measures

Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes
Immediately 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. Keep container closed when not in use. Corrosives area.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood.

Hazards Identification

Inhalation
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Skin
Causes skin burns.
Eyes
Causes eye burns.
Ingestion
May cause burns to the digestive tract.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. May polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
UN (DOT)
2823

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 protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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.
Exposure Effects
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.
Poison Class
4

Fire Fighting Measures

Flash Point
88
Autoignition
396
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Fire Potential
May burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.

Stability and Reactivity

Incompatibilities
Oxidizers.
Stability
Stable under normal temperatures and pressures.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2823
Hazard Class
8
Packing Group
III
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