Phosphorus pentafluoride

  • Pentafluorophosphorane
  • Phosphorane, pentafluoro
Formula
PF5
Structure
Description
Colorless gas. Unpleasant odor.
Uses
Used as a source of phosphorus for ion implantation in semi-conductors, an excellent catalyst, especially in ionic polymerizations.

Registry Numbers and Inventories.
CAS
7647-19-0
EC (EINECS/ELINCS)
231-602-3
RTECS
TH4070000
RTECS class
Other
UN (DOT)
2198
Merck
12,7509
Beilstein/Gmelin
2397 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
F5P
Formula mass
125.96
Melting point, °C
-83
Vapor pressure, mmHg
21430 (21.1 C)
Vapor density (air=1)
4.46
Critical temperature
> 25
Density
5.805 g/L (gas)
Solubility in water
Decomposes

Hazards and Protection.
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.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus.
Small spills/leaks
Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Do not use water on material itself.
Stability
No data.

Fire.
Fire fighting
Do not use water on material itself. Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Do not apply water to point of leak in tank car or container.
Fire potential
May burn but does not ignite readily.
Hazards
Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Containers may explode when heated. Ruptured cylinders may rocket.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Dyspnea, bronchospasm (with abnormal pfts and hypoxia), chemical pneumonitis, pulmonary edema (can be hemorrhagic), tracheobronchitis, upper airway obstruction, chemical burns (larynx, trachea, bronchi) and ards may occur following inhalation.
   Skin
Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method 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. Administer oxygen if breathing is difficult. Effects may be delayed.
   Skin
Remove all exposed clothing and jewelry taking necessary precautions to prevent secondary exposure to health care providers. Irrigate exposed areas promptly with copious amounts of water for at least 30 minutes. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing.
   Eyes
In case of contact with liquefied gas, thaw frosted parts with lukewarm water Immediately flush skin with running water for at least 20 minutes.

Transport.
UN number
2198
Response guide
Hazard class
2.3
PRTC
T
Std. Transport #
4920183