Product Identification

Product Name

Undecenoic acid

Synonyms

Desenex
Renselin
Undec-10-enoic acid
Undecylenic acid

CAS

112-38-9

Formula

C11H20O2

Molecular Weight

184.28

EINECS

203-965-8

RTECS

YQ2975000

RTECS Class

Agricultural Chemical and Pesticide; Primary Irritant

Merck

12,9983

Beilstein/Gmelin

1762631

EC Class

irritant, dangerous for the environment

Physical and Chemical Properties

Appearance

White crystal mass or colorless to yellowish liquid, depending on room temperature and purity. The characteristic odor is suggestive of perspiration and has been described as fruity-rosy.

Solubility in water

Insoluble

Melting Point

24

Boiling Point

300

Density

0.9100 g/cm3

Usage

Used in perfumes, flavouring agents and plastics, and as a modifying agent in plasticizers and lubricant additives; weed killer and defoliant.

Saturation Concentration

Very low at normal temperatures

Refractive Index

1.4486 (20 C)

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

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.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids. Get medical aid.

Handling and Storage

Storage

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

Handling

Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.

Hazards Identification

Ingestion

The toxicological properties of this substance have not been fully investigated.

Inhalation

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

Causes severe skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Substance is rapidly absorbed through the skin.

Eyes

Causes eye irritation.

EC Risk Phrase

R 36/38

EC Safety Phrase

S 26 36

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective eyeglasses or chemical safety goggles, protective gloves and clothing to prevent 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.

Poison Class

3

Fire Fighting Measures

Flash Point

146

Autoignition

275

Fire Fighting

Wear approved SCBA in full pressure-demand and full protective gear. This material in sufficient quantity as dust is capable of creating a dust explosion. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Bases - oxidizing agents - reducing agents.

Decomposition

Carbon monoxide, carbon dioxide.

Transport Information

HS Code

2916 19 10