Fluorine, gas

Formula F2
Structure
Description Pale yellow liquid, with very pungent odor.
Uses Manufacture fluorochemicals & plastics, rocket propellant.

Registry Numbers and Inventories.
CAS 7782-41-4
EC (EINECS/ELINCS) 231-954-8
EC Index Number 009-001-00-0
EC Class May cause fire; Very toxic; Corrosive
RTECS LM6475000
RTECS class Primary Irritant
UN (DOT) 1045
Merck 12,4199
Beilstein/Gmelin 16281 (G)
RCRA P056
Swiss Giftliste 1 G-1629
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Korea ECL Listed

Odor Threshold Odor threshold 0.035 ppm
Properties.
Formula F
Formula mass 38.00
Melting point, °C -223
Boiling point, °C -188.2
Vapor pressure, mmHg 360000 (25 C)
Vapor density (air=1) 1.695
Critical temperature -129
Critical pressure 55
Density 1.32 g/cm3 (-273.15 C)
Solubility in water Reacts
Partition coefficient, pKow 1.32
Heat of fusion 1.42 kJ/mol
Heat of vaporization 6.7 kJ/mol

Hazards and Protection.
Storage Protect against physical damage. Isolate from other storage, especially materials with which fluorine is known to react. Keep away from sources of heat and ignition.
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 (SCBA).
Small spills/leaks Do not touch or walk through spilled material. If you have not donned special protective clothing approved for this material, do not expose yourself to any risk of this material touching you. Do not direct water at spill or source of leak. A fine water spray remotely directed to the edge of the spill pool can be used to direct and maintain a hot flare fire which will burn the spilled material in a controlled manner. Keep combustibles (wood, paper, oil, etc.) away from spilled material. Stop leak if you can do it without risk. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Isolate area until gas has dispersed. Ventilate the area.
Stability Reactive under confinement.
Incompatibilities Reacts with arsenic and arsenic trioxide at ordinary temperatures,.
Decomposition Decomposition water, giving hydrofluoric acid, oxygen fluoride, hydrogen peroxide, oxygen and ozone.

Fire.
Fire fighting SMALL FIRES: Dry chemical, soda ash, lime or sand. LARGE FIRES: Water spray, fog (flooding amounts). Do not get water inside containers. Move containers from fire area if you can do it without risk. FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn.
Fire potential Substance does not burn but will support combustion.
Hazards This is a strong oxidizer and will react vigorously or explosively with many materials including fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Vapor explosion and poison hazard indoors, outdoors or in sewers. Containers may explode when heated. Ruptured cylinders may rocket.
Combustion products Toxic gases generated in fires involving fluorine.
NFPA Health 4
  Flammability 0  
  Reactivity 4  
  Special OW

Health.
Exposure limit(s) OSHA PEL: TWA 0.1 ppm (0.2 mg/m3) NIOSH REL: TWA 0.1 ppm (0.2 mg/m3) NIOSH IDLH: 25 ppm
Poison_Class 1
Exposure effects Both fever and chills have been reported. Lethargy with delayed-onset dyspnea was reported in mice. In one animal study, no malformations were found following injection of fluorine-ion containing dust extracts.
   Inhalation Respiratory tract irritation may progress to pulmonary edema.
   Skin Thermal burns or frostbite may occur.
   Eyes Human volunteers exposed to up to 25 ppm have shown little irritation. Eyelid eczema may occur and attenuation of retinal arteries may result from prolonged exposure. Fluorine is irritating to nasal mucosa.

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 contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Direct contact with fluorine liquid may produce frostbite injury.
   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.

Transport.
UN number 1045
Response guide 124
Hazard class 2.3
PRTC T
USCG CHRIS Code FXX  
Std. Transport # 4920180