Product Identification

Product Name

Triethyl phosphate

Synonyms

Ethyl phosphate
TEP

CAS

78-40-0

Formula

C6H15O4P

Molecular Weight

182.16

EINECS

201-114-5

RTECS

TC7900000

RTECS Class

Mutagen; Reproductive Effector; Primary Irritant

Merck

12,9806

Beilstein/Gmelin

1705772

Beilstein Reference

4-01-00-01339

EC Index Number

015-013-00-7

EC Class

Harmful

Physical and Chemical Properties

Appearance

Colorless liquid, mild odor.

Solubility in water

Slightly soluble

Melting Point

-57

Boiling Point

215

Vapor Pressure

0.18 (25 C)

Density

1.07 g/cm3

Partition Coefficient

1.08

Heat Of Vaporization

43.7 kJ/mol

Usage

Used as a catalyst in the production of acetic anhydride by the ketene process, as a desensitizing agent for peroxides, and as a solvent and plasticizer for cellulose acetate.

Saturation Concentration

1316 ppm (0.1%) at 39.6 C (calculated)

Vapor Density

6.28

Refractive Index

1.407 (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.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.

Eyes

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

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Wash hands before eating. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Wash clothing before reuse.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. May be harmful if swallowed. May inhibit cholinesterase activity, thereby producing nervous system effects.

EC Risk Phrase

R 22

EC Safety Phrase

S 25

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

Chronic exposure to organic solvents has been associated with various neurotoxic effects including permanent brain and nervous system damage. Chronic ingestion may cause neurological symptoms. Reproductive effects have been reported in animals.

Poison Class

4

Fire Fighting Measures

Flash Point

115

Autoignition

480

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode when heated. Extinguishing media: Water or foam may cause frothing. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam. Use agent most appropriate to extinguish fire. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

10

Lower exp. limit

1.7

Fire Potential

Slight when exposed to heat or flame.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents - strong bases.

Decomposition

Carbon monoxide, oxides of phosphorus, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

May produce hazardous decomposition products such as carbon dioxide, carbon monoxide and oxides of phosphorus.

Transport Information

HS Code

2919 00 90