Triflate anhydride

  • Triflic acid anhydride
  • Trifluoromethylsulfonic anhydride
  • Trifluoromethanesulfonic anhydride
  • Trifluoromethylsulfonic acid anhydride
  • Perfluoromethanesulfonic anhydride
  • Methanesulfonic acid, trifluoro-, anhydride
Formula
(CF3SO2)2O
Structure
Description
Clear, colorless liquid.

Registry Numbers and Inventories.
CAS
358-23-6
EC (EINECS/ELINCS)
206-616-8
EC Class
corrosive
R 14 22 35 37
S 26 36/37/39 45
UN (DOT)
1760
Beilstein/Gmelin
1813600
Beilstein Reference
4-03-00-00035
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C2F6O5S2
Formula mass
282.14
Boiling point, °C
83
Vapor pressure, mmHg
87 (25 C)
Vapor density (air=1)
5.2
Density
1.67 g/cm3
Solubility in water
Insoluble
Refractive index
1.32 (20 C)
Partition coefficient, pKow
2.12
Heat of vaporization
31.0 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Corrosives area.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Do not allow contact with water. Use only in a chemical fume hood. Wash clothing before reuse.
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 and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Do not expose spill to water. Do not get water inside containers.
Disposal code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong bases, strong oxidizing agents, acids, alcohols, moist air, or water.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen fluoride.

Fire.
Flash Point,°C
-1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water Reactive. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Containers may explode when heated. Extinguishing media: Do NOT use water directly on fire. Use dry chemical, carbon dioxide, or alcohol-resistant foam. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Causes gastrointestinal tract burns.
   Inhalation
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
   Skin
Causes skin burns.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   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. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1760
Response guide
Hazard class
8
Packing Group
I; II; III
 
HS Code
2904 90 20