Cymene

  • Cymol
  • Methylisopropylbenzene
  • Isopropyltoluene
  • Methyl(1-methylethyl)benzene
Formula
C10H14
Structure
Description
Colorless liquid with a mild pleasant odor.

Registry Numbers and Inventories.
CAS
25155-15-1
EC (EINECS/ELINCS)
246-674-1
UN (DOT)
1325
Merck
12,2832
Beilstein/Gmelin
NA
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C10H14
Formula mass
134.22
Melting point, °C
-67.9
Boiling point, °C
177.2
Density
0.857 g/cm3 (20 C)

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
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. With clean shovel place material into clean, dry container and cover loosely; move containers from spill area.
Stability
No data.
Incompatibilities
Can react exothermically with bases and with diazo compounds.

Fire.
Autoignition, °C
436
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water may be ineffective.Fire Extinguishing Agents: Foam, dry chemical, carbon dioxide
Fire potential
Flammable/combustible material. May be ignited by friction, heat, sparks or flames.
Combustion products
Fire may produce irritating and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
See inhalation.
   Inhalation
Inhalation causes impairment of coordination, headache. Contact with liquid causes mild irritation of eyes and skin. Ingestion causes irritation of mouth and stomach.
   Skin
May cause burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Induce vomiting; get medical attention.
   Inhalation
Remove victim from contaminated area; administer artificial respiration if necessary; call physician.
   Skin
Wipe off liquid; wash well with soap and water.
   Eyes
Flush with water for 15 min.; call a physician.

Transport.
UN number
1325
Response guide
Hazard class
4.1
Packing Group
II; III
 
USCG CHRIS Code
CMP
 
32 Aromatic hydrocarbons
IMO Pollution Category
C
IMO Hazard code
P