Sulfuryl fluoride

  • Vikane
Formula SO2F2
Structure
Description A colorless odorless gas.
Uses Insecticide & fumigant.

Registry Numbers and Inventories.
CAS 2699-79-8
EC (EINECS/ELINCS) 220-281-5
EC Index Number 009-015-00-7
EC Class Toxic; Irritant
RTECS WT5075000
RTECS class Agricultural Chemical and Pesticide; Reproductive Effector
UN (DOT) 2191
Merck 12,9154
Beilstein/Gmelin 2095 (G)
EPA OPP 78003
Swiss Giftliste 1 G-2865
Canada DSL/NDSL NDSL
US TSCA Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

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 fighting 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.
Fire potential May burn but does not ignite readily.
Hazards Vapors from liquefied gas are initially heavier than air and spread along ground. Containers may explode when heated. Ruptured cylinders may rocket.
Combustion products Fire will produce irritating, corrosive and/or toxic gases.
NFPA Health 3

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_Class 1
Exposure effects Weakness, restlessness, seizures, and CNS depression may occur. Long-term exposure may be associated with olfactory deficits and subclinical CNS effects.
   Ingestion Nausea, vomiting, drooling, and fecal incontinence may occur following acute ingestion exposure.
   Inhalation Dyspnea, irritation, and pulmonary edema can occur.
   Skin May 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
 
   Ingestion Seek medical assistance.
   Inhalation Move 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).
   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 2191
Response guide 123
Hazard class 2.3
PRTC T
Std. Transport # 4920526