Product Identification

Product Name

Triethylborane

Synonyms

Boron, triethyl-
Triethylborane
Triethylborine

CAS

97-94-9

Formula

C6H15B

Molecular Weight

97.99

EINECS

202-620-9

RTECS

ED2100000

RTECS Class

Other

Beilstein/Gmelin

1731462

Beilstein Reference

4-04-00-04359

Physical and Chemical Properties

Appearance

Colorless liquid.

Solubility in water

Slightly soluble

Melting Point

-92.9

Boiling Point

94 - 95

Vapor Pressure

50 (25 C)

Density

0.675 g/cm3

Partition Coefficient

1.69

Heat Of Vaporization

32.2 kJ/mol

Heat Of Combustion

-4508 kJ/mol

Usage

Fuel additive, igniter or fuel for jet & rocket engines, olefin polymerization catalyst, intermediate.

Refractive Index

1.3988 (20 C)

First Aid Measures

Ingestion

Administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.

Inhalation

Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Observe for systemic effects which chiefly occur from chronic skin exposure, or application of borates to denuded skin. Treatment should include recommendations listed in the oral exposure section when appropriate.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Skin

The oral mucosa, lips and throat may be red. Erythematous rash with desquamation (cooked lobster syndrome) may develop on the palms, soles, and buttocks. A generalized rash has also been reported.

Ingestion

Nausea, vomiting, and diarrhea are common. The vomitus and feces may be blue-green in color. Hemorrhagic gastroenteritis can occur.

EC Risk Phrase

R 11 34

EC Safety Phrase

S 7 23 26 36/37/39 43 45

UN (DOT)

2924

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Respirators

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Exposure Effects

Significant ingestions or dermal exposures can be associated with weak, rapid pulse, cyanosis and abnormally low blood pressure. The patient may present with reduced body temperature, elevated body temperature or normal body temperature. Headache, lethargy, restlessness, weakness, CNS irritation, and/or seizures may occur with long term or repeated exposures. There is insufficient information concerning the reproductive effects of borates in humans. Adverse testicular effects and infertility have been reported in animals. <br>There have been limited animal studies which suggest decreased ovulation, fetotoxicity and developmental defects may occur with very high exposure levels. Maternal toxicity was present in some studies.

Poison Class

2

Fire Fighting Measures

Flash Point

12

Fire Fighting

Do not use halogenated extinguishing agents.

Fire Potential

Spontaneously flammable in air

Accidental Release Measures

Small spills/leaks

Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity

Incompatibilities

It will react with water or steam to produce toxic and flammable vapors; it can react vigorously with oxidizing materials.

Stability

Trialkylboranes are stable indefinitely when stored under an inert atmosphere.

Combustion Products

When heated to decomposition or upon contact with air, it emits toxic fumes.

Transport Information

UN Number

2924