3-Methylbenzonitrile

  • m-Tolunitrile
  • 3-Tolunitrile
  • 3-Cyanotoluene
  • m-Cyanotoluene
  • m-Toluenenitrile
Formula
C8H7N
Structure
Description
Clear, yellow liquid.

Registry Numbers and Inventories.
CAS
620-22-4
EC (EINECS/ELINCS)
210-631-5
S 23 24/25
RTECS
XV0525000
RTECS class
Drug; Primary Irritant
UN (DOT)
3273
Beilstein/Gmelin
507391
Beilstein Reference
4-09-00-01717
Swiss Giftliste 1
G-5382
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C8H7N
Formula mass
117.16
Melting point, °C
-0.5
Boiling point, °C
213
Vapor pressure, mmHg
0.16 (25 C)
Density
1.0028 g/cm3 (0 C)
Solubility in water
Slightly soluble
Surface tension
36.79 g/s2 (20 C)
Refractive index
1.5252 (20 C)
Partition coefficient, pKow
2.12
Heat of vaporization
45.0 kJ/mol

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
Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
86
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Fire potential
This chemical is combustible.
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.
Poison_Class
4
Exposure effects
   Ingestion
See inhalation.
   Inhalation
May be fatal. May cause irritatior or burns. Vapors may cause dizziness or suffocation.
   Skin
Causes irritation.
   Eyes
Causes irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

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