Sulfuryl fluoride

  • Vikane
FormulaSO2F2
Structure
DescriptionA colorless odorless gas.
UsesInsecticide & fumigant.

Registry Numbers and Inventories.
CAS2699-79-8
EC (EINECS/ELINCS)220-281-5
EC Index Number009-015-00-7
EC ClassToxic; Irritant
RTECSWT5075000
RTECS class Agricultural Chemical and Pesticide; Reproductive Effector
UN (DOT)2191
Merck12,9154
Beilstein/Gmelin2095 (G)
EPA OPP 78003
Swiss Giftliste 1G-2865
Canada DSL/NDSLNDSL
US TSCAListed
New ZealandListed
Japan ENCS (MITI) Listed
Korea ECLListed

Properties.
Formula F2O2S
Formula mass 102.06
Melting point, °C -135.8
Boiling point, °C -55
Vapor pressure, mmHg 760 (-52 C)
Vapor density (air=1) 3.5
Critical temperature 96
Density 1.349 g/cm3 (20 C)
Solubility in water 2 g/L

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 (SCBA).
Small spills/leaks Attempt to stop leak if without undue personnel hazard.
Stability Stable to 400 C stable to light. Stable up to approx 500 C when dry. Rapidly hydrolyzed by aqueous alkali, but not by water.
Incompatibilities Incompatible with water, strong oxidizing agents, alcohols, amines, and bases May react vigorously or explosively
Decomposition When heated to decomposition it emits very toxic fumes of hydrogen fluoride and sulfur oxides.

Fire.
Fire fightingExtinguish 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.
Fire potentialMay burn but does not ignite readily.
HazardsVapors from liquefied gas are initially heavier than air and spread along ground. Containers may explode when heated. Ruptured cylinders may rocket.
Combustion productsFire will produce irritating, corrosive and/or toxic gases.
NFPAHealth3

Health.
Exposure limit(s)NIOSH REL: TWA 5 ppm (20 mg/m3) ST 10 ppm (40 mg/m3) OSHA PEL: TWA 5 ppm (20 mg/m3) IDLH 200 ppm
Poison_Class1
Exposure effects Weakness, restlessness, seizures, and CNS depression may occur. Long-term exposure may be associated with olfactory deficits and subclinical CNS effects.
   IngestionNausea, vomiting, drooling, and fecal incontinence may occur following acute ingestion exposure.
   InhalationDyspnea, irritation, and pulmonary edema can occur.
   SkinMay cause irritation. May be fatal if absorbed through the skin. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
   Eyes See Skin.

First aid
 
   IngestionSeek medical assistance.
   InhalationMove patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin Rewarming and a variety of topical treatments have been recommended for treating frostbite injuries (see main section).
   EyesIrrigate 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 number2191
Response guide123
Hazard class 2.3
PRTCT
Std. Transport # 4920526