Product Identification

Product Name

2-Ethylhexanoic acid

Synonyms

2-Butylbutanoic acid
2-Ethylcaproic acid
2-Ethylhexoic acid
3-Heptanecarboxylic acid
Butylethylacetic acid

CAS

149-57-5

Formula

C8H16O2

Molecular Weight

144.22

EINECS

205-743-6

RTECS

MO7700000

RTECS Class

Mutagen; Reproductive Effector; Primary Irritant

Beilstein/Gmelin

1750468

Beilstein Reference

3-10-00-01641

EC Index Number

607-230-00-6

EC Class

Toxic for reproduction Category 3

Physical and Chemical Properties

Appearance

Colorless liquid with a characteristic odor.

Solubility in water

Soluble

Melting Point

-82.8

Boiling Point

228

Vapor Pressure

0.03 (25 C)

Density

0.908 g/cm3 (15 C)

pKa/pKb

4.82 (pKa)

Partition Coefficient

2.64

Heat Of Vaporization

51.2 kJ/mol

Usage

Cosolvent and defoamer in pesticides.

Saturation Concentration

Approximately 40 ppm (0.004%) at 20 C (calculated)

Vapor Density

5

Refractive Index

1.4735

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 immediately.

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 immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

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 container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

Causes skin irritation. May be harmful if absorbed through the skin.

Eyes

May cause eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 63

EC Safety Phrase

S 36/37

UN (DOT)

1738

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

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

Possible risk of harm to the unborn child.

Poison Class

4

Fire Fighting Measures

Flash Point

114

Autoignition

310

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. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

6.7

Lower exp. limit

.9

Fire Potential

This chemical is combustible.

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. Provide ventilation.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Oxidizing agents, reducing agents, bases.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

1738

Hazard Class

6.1

Packing Group

II

HS Code

2915 90 80