Acetyl fluoride

  • Ethanoyl fluoride
  • Methylcarbonyl fluoride
Formula
C2H3FO
Structure

Registry Numbers and Inventories.
CAS
557-99-3
EC (EINECS/ELINCS)
209-188-0
26 36/37/39 45
RTECS
AP2800000
RTECS class
Other
UN (DOT)
3265
Beilstein/Gmelin
1733308
Beilstein Reference
4-02-00-00393
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C2H3FO
Formula mass
62.05
Melting point, °C
-84
Boiling point, °C
20 - 21
Vapor pressure, mmHg
889 (25 C)
Density
1.002 g/cm3 (15 C)
Solubility in water
Very soluble

Hazards and Protection.
Storage
Keep tightly closed. Incompatible Materials: Do not allow contact with water Store at 2-8 C
Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum).
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Incompatibilities
Water, Alcohols, Oxidizing agents, Strong bases.
Decomposition
Carbon monoxide, Carbon dioxide, Hydrogen fluoride.

Fire.
Flash Point,°C
-15
Fire fighting
Extinguish using Carbon dioxide. Dry chemical powder. Unsuitable: Do not use water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Water hydrolyzes material liberating acidic gas which in contact with metal surfaces can generate flammable and/or explosive hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
Corrosive. Causes burns. Irritating to eyes and respiratory system. Lachrymator.
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

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.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
3265
Response guide
Hazard class
8