Names | |
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IUPAC name
Dodecane
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Identifiers | |
112-40-3 | |
3D model (Jmol) | Interactive image |
1697175 | |
ChEBI | CHEBI:28817 |
ChEMBL | ChEMBL30959 |
ChemSpider | 7890 |
DrugBank | DB02771 |
ECHA InfoCard | 100.003.607 |
EC Number | 203-967-9 |
201408 | |
KEGG | C08374 |
MeSH | n-dodecane |
PubChem | 8182 |
RTECS number | JR2125000 |
UNII | 11A386X1QH |
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Properties | |
C12H26 | |
Molar mass | 170.34 g·mol−1 |
Appearance | Colorless liquid |
Odor | Gasoline-like to odorless |
Density | 0.7495 g mL−1 at 25 °C |
Melting point | −10.0 to −9.3 °C; 14.1 to 15.2 °F; 263.2 to 263.8 K |
Boiling point | 214 to 218 °C; 417 to 424 °F; 487 to 491 K |
log P | 6.821 |
Vapor pressure | 18 Pa (at 25 °C) |
Henry's law
constant (kH) |
1.4 nmol Pa−1 kg−1 |
Refractive index (nD)
|
1.421 |
Viscosity | 1.34 mPa s |
Thermochemistry | |
376.00 J K−1 mol−1 | |
Std molar
entropy (S |
490.66 J K−1 mol−1 |
Std enthalpy of
formation (ΔfH |
−353.5–−350.7 kJ mol−1 |
Std enthalpy of
combustion (ΔcH |
−7901.74 kJ mol−1 |
Hazards | |
Safety data sheet | hazard.com |
GHS pictograms | |
GHS signal word | DANGER |
H304 | |
P301+310, P331 | |
EU classification (DSD)
|
Xn |
R-phrases | R65 |
S-phrases | S62 |
NFPA 704 | |
Flash point | 71 °C (160 °F; 344 K) |
205 °C (401 °F; 478 K) | |
Explosive limits | 0.6% |
Related compounds | |
Related alkanes
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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what is ?) | (|
Infobox references | |
Dodecane (also known as dihexyl, bihexyl, adakane 12 or duodecane) is a liquid alkane hydrocarbon with the chemical formula CH3(CH2)10CH3 (or C12H26), an oily liquid of the paraffin series. It has 355 isomers.
It is used as a solvent, distillation chaser, and scintillator component. It is used as a diluent for tributyl phosphate (TBP) in reprocessing plants.
The combustion reaction of dodecane is as follows:
One litre of fuel needs about 15 kg of air to burn, and generates 2.3 kg (or 1.2 m3) of CO2 upon complete combustion.
In recent years, n-dodecane has garnered attention as a possible surrogate for kerosene-based fuels such as Jet-A, S-8, and other conventional aviation fuels. It is considered a second-generation fuel surrogate designed to emulate the laminar flame speed, largely supplanting n-decane, primarily due to its higher molecular mass and lower hydrogen to carbon ratio which better reflect the n-alkane content of jet fuels.