1,4-Dimethylcyclohexane

  • p-Dimethylcyclohexane
  • Cyclohexane, 1,4-dimethyl-
Formula
C8H16
Structure
Description
Clear colorless liquids with a petroleum-like odor.

Registry Numbers and Inventories.
CAS
589-90-2
EC (EINECS/ELINCS)
209-663-2
EC Index Number
601-019-00-2
EC Class
Highly flammable; Harmful; Irritant; Vapours may cause drowsiness and dizziness; Dangerous for the Environment
UN (DOT)
2263
Beilstein/Gmelin
969181
Beilstein Reference
3-05-00-00104
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H16
Formula mass
112.22
Melting point, °C
-87
Boiling point, °C
120
Vapor pressure, mmHg
10
Critical temperature
324
Critical pressure
30.0
Density
0.77 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.422 (20 C)
Partition coefficient, pKow
3.16

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Flammables-area.
Handling
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Skin: Wear appropriate protective gloves 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. Remove all sources of ignition. Use a spark-proof tool.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
16
Autoignition, °C
304
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 spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
HIGHLY FLAMMABLE.
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 hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. Substance may be transported hot.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation. May be harmful if inhaled.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2263
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
HFN
 
Std. Transport #
4909156