Dodecane

  • Bihexyl
  • Dihexyl
Formula
CH3(CH2)10CH3
Structure
Description
Colorless liquid with gasoline-like odor.
Uses
As solvent, in organic synth, as distillation chaser, in jet fuel research.

Registry Numbers and Inventories.
CAS
112-40-3
EC (EINECS/ELINCS)
203-967-9
EC Class
harmful
RTECS
JR2125000
RTECS class
Tumorigen
UN (DOT)
3295
Beilstein/Gmelin
1697175
Beilstein Reference
4-01-00-00498
Swiss Giftliste 1
G-1601
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H26
Formula mass
170.34
Melting point, °C
-9.6
Boiling point, °C
216
Vapor pressure, mmHg
0.21 (25 C)
Vapor density (air=1)
5.9
Saturation Concentration
400 ppm (0.04%) at 20 C (calc.)
Odor Threshold Odor threshold 37 mg/m3
Critical temperature
386
Critical pressure
18.11
Density
0.7487 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
1.82
Surface tension
25 g/s2 (30 C)
Refractive index
1.4210 (20 C)
Partition coefficient, pKow
7.13
Heat of vaporization
34.4 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
B3
Handling
Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
71
Autoignition, °C
200
Upper exp. limit, %
4.7
Lower exp. limit, %
0.6
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Combustible Liquid. Extinguishing media: Use water spray to cool fire-exposed containers. Water may be ineffective. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
This chemical is combustible.
Hazards
Disaster hazard: Dangerous; keep away from heat and open flame.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
-
Exposure effects
Mild central nervous system depression or excitation may occur after ingestion or vapor inhalation. CNS effects can occur secondary to hydrocarbon pneumonitis and hypoxia, or from additives and contaminants (aniline, heavy metals, camphor, or pesticides). Some hydrocarbons are simple asphyxiants (e.G., Methane, ethane, propane gasses) which can produce CNS effects secondary to hypoxia. In a prospective study in Toronto, major congenital malformations were noted in 13 of 125 fetuses of mothers exposed to organic solvents during pregnancy.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Aspiration may lead to pulmonary edema. Inhalation at high concentrations may cause CNS depression and asphixiation.
   Skin
May cause irritation and dermatitis. May cause cyanosis of the extremities.
   Eyes
May cause eye irritation. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. 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. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   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
3295
Response guide
Hazard class
3
Packing Group
I; II; III
 
USCG CHRIS Code
DOC
 
HS Code
2901 10 90
 
IMO Chemical Code
18
IMO Pollution Category
III