Phosphorus tribromide

  • Phosphorus bromide
Formula
PBr3
Structure
Description
A colorless fuming liquid with a pungent odor.
Uses
Analysis (testing for sugar & oxygen), catalyst, synthesis.

Registry Numbers and Inventories.
CAS
7789-60-8
EC (EINECS/ELINCS)
232-178-2
EC Index Number
015-103-00-6
EC Class
Reacts violently with water; Corrosive; Irritant
R 14 34 37
RTECS
TH4460000
RTECS class
Other
UN (DOT)
1808
Merck
12,7514
Beilstein/Gmelin
2185 (G)
Swiss Giftliste 1
G-2747
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Br3P
Formula mass
270.69
Melting point, °C
-40
Boiling point, °C
175
Vapor pressure, mmHg
10
Vapor density (air=1)
9.3
Density
2.8903 g/cm3 (20 C)
Solubility in water
Reacts
Viscosity
1.302 cp (60 C)
Surface tension
45.8 g/s2
Heat of vaporization
40.5 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Corrosives area. Do not store in metal containers.
Handling
Wash thoroughly after handling. Wash hands before eating. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Discard contaminated shoes.
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.
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. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Do not get water inside containers. Do not use combustible materials such as paper towels to clean up spill. Use water spray to reduce vapors, do not put water directly on leak, spill area or inside container.
Disposal code
24
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Metals, oxidizing agents, strong acids, bases, sodium carbonate, sulfuric acid, sodium potassium, chlorosulfonic acid, oleum, ruthenium tetroxide, calcium hydroxide, phenylpropanol, fluorosulfuric acid, 1,1,1-tris(hydroxymethyl) methane.
Decomposition
Oxides of phosphorus, irritating and toxic fumes and gases, hydrogen bromide.

Fire.
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. Contact with water can cause violent liberation of heat and splattering of the material. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. Substance will react with water (some violently) releasing flammable, toxic, or corrosive gases and runoff. Extinguishing media: Do NOT use water directly on fire. Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out. For large fires flood fire with water from a distance. For small fires, use dry chemical or carbon dioxide.
Fire potential
May burn but not ignite readily. May ignite combustibles (wood, paper, oil, clothing, etc.).
Hazards
Do not use water on adjacent fires. Acids formed by reaction with water will attack metals and generate flammable hydrogen gas, which may form explosive mixtures in enclosed spaces.
Combustion products
Irritating hydrogen bromide and phosphoric acid vapors may form in fire.
Health
3
 
Flammability
0
 
 
Reactivity
2
 
 
Special
W

Health.
Exposure limit(s)
TLV (as Pb): ppm; 0.05 mg/m3 A3 (ACGIH 1996). MAK: ppm; 0.1 mg/m3; as Pb (1996).
Poison_Class
1
Exposure effects
Fever in the absence of infectious complications may be seen (rubitsky & myerson, 1949; blumenthal & lesser, 1938). Abnormally low blood pressure and rapid heart rate may develop in severe cases. Hepatic encephalopathy, usually occurring in the third stage of poisoning, may include symptoms of headache, seizures, confusion, delirium and coma. Headache, malaise, restlessness, irritability, drowsiness, lethargy, weakness, delirium, psychosis, stupor, seizures, and coma have been reported. Phosphorus has been shown to cross the placental barrier, but cases of human fetal poisoning have not been reported.
   Ingestion
May be fatal if swallowed. May cause severe and permanent damage to the digestive tract. Causes digestive tract burns with immediate pain, swelling of the throat, convulsions, and possible coma. Ingestion may produce corrosive ulceration and bleeding and necrosis of the gastrointestinal tract accompanied by shock and circulatory collapse.
   Inhalation
Causes chemical burns to the respiratory tract. Inhalation of high vapor concentrations may cause ulceration of nasal mucous and possibly bronchospasm.
   Skin
Causes skin burns. Contact with the skin may cause skin lesions which are characterized by cracking and fissuring of the skin and the development of slow-healing ulcers.
   Eyes
Causes severe eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. 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. Call a poison control center.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   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. Discard contaminated clothing in a manner which limits further exposure. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
1808
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
PBR
 
HS Code
2812 90 00
 
Std. Transport #
4932358