Product Identification

Product Name

Tetrabutylphosphonium bromide

Synonyms

PX-4B
Tetrabutylphosphanium bromide
Tetrabutylphosphonium bromide

CAS

3115-68-2

Formula

C16H36BrP

Molecular Weight

339.35

EINECS

221-487-8

RTECS

TA2417000

RTECS Class

Primary Irritant

Beilstein/Gmelin

4160474

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

White to cream crystalline powder.

Solubility in water

Soluble

Melting Point

95 - 101

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.

Skin

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

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 containers tightly closed. Store protected from moisture. Store in a cool, dry area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Keep from contact with moist air and steam. Do not breathe dust or fumes.

Hazards Identification

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

Inhalation

May be harmful if inhaled. Causes irritation of the mucous membrane and upper respiratory tract.

Skin

May be fatal if absorbed through the skin. Causes severe skin irritation and possible burns.

Eyes

Causes severe eye irritation and possible burns.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 24 20/22 36/37/38

EC Safety Phrase

S 26 28 36/37/39 45

UN (DOT)

2811

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.

Fire Fighting Measures

Flash Point

290

Autoignition

270

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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

2

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Phosphine, carbon monoxide, oxides of phosphorus, carbon dioxide, hydrogen bromide, bromine fumes, palladium.

Combustion Products

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

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2931 00 95