Pyruvonitrile

  • 2-Oxopropanenitrile
  • Acetyl cyanide
  • Pyruvic acid nitrile
  • a-Oxopropionitrile
Formula
C3H3NO
Structure
Description
Clear, yellow liquid

Registry Numbers and Inventories.
CAS
631-57-2
EC (EINECS/ELINCS)
211-159-2
11 23/25
36/37/39 45
UN (DOT)
3273
Beilstein/Gmelin
1737633
Beilstein Reference
4-03-00-01515
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C3H3NO
Formula mass
69.06
Boiling point, °C
92-93
Vapor pressure, mmHg
52 (25 C)
Density
1.35 g/cm3 (20 C)
Refractive index
1.3755 (20 C)
Heat of vaporization
33.2 kJ/mol

Hazards and Protection.
Storage
Keep container closed. Keep away from heat, sparks, and open flame.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, Strong acids, Strong bases.
Decomposition
Carbon monoxide, Carbon dioxide, Nitrogen oxides.

Fire.
Flash Point,°C
14
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
1
 

Health.
Exposure effects
Toxic. Toxic by inhalation and if swallowed.
   Ingestion
See inhalation.
   Inhalation
May be fatal. May cause irritatior or burns. Vapors may cause dizziness or suffocation.
   Skin
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. Remove and isolate contaminated clothing and shoes.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
3273
Response guide
Hazard class
3
Packing Group
I