Product Identification

Product Name

2-Ethylbutyric acid

Synonyms

2-Ethyl-n-butyric acid
3-Pentanecarboxylic acid
Acetic acid, diethyl
Butanoic acid, 2-ethyl
Diethylacetic acid

CAS

88-09-5

Formula

C6H12O2

Molecular Weight

116.16

EINECS

201-796-4

RTECS

ET1400000

RTECS Class

Other

Merck

13,3137

Beilstein/Gmelin

1098634

Beilstein Reference

4-02-00-00950

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

Water-white liquid with a faint, unpleasant, fatty odor resembling butyric acid.

Solubility in water

18 g/L

Melting Point

-14

Boiling Point

193 - 194

Vapor Pressure

0.18 (25 C)

Density

0.9355 g/cm3 (0 C)

pKa/pKb

4.80 (pKa)

Partition Coefficient

1.66 (25 C)

Heat Of Vaporization

47.6 kJ/mol

Usage

Used in flavourings; as an intermediate for pharmaceuticals and dyestuffs; in the manufacture of esters and other chemicals.

Saturation Concentration

Approximately 105 ppm (0.0105%) at 25 C (calculated)

Refractive Index

1.4112 (20 C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. 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.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Ingestion

May cause irritation of the digestive tract.

Inhalation

May cause narcotic effects in high concentration. Causes irritation of mucous membrane.

Skin

Causes mild skin irritation. Harmful if absorbed through the skin.

Eyes

Causes severe eye irritation.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 21 34

EC Safety Phrase

S 26 36/37/39 45

UN (DOT)

2810

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 to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Poison Class

4

Fire Fighting Measures

Flash Point

87

Autoignition

385

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. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Combustible Liquid. Extinguishing media: Use water spray to cool fire-exposed containers. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.

Upper exp. limit

8.4

Lower exp. limit

1.3

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Bases, strong oxidizing agents, strong reducing agents.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

2810

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2915 90 80