Dodecane
| Dodecane | |
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Dodecane[1] |
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Other names
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| Identifiers | |
| CAS number | 112-40-3  |
| PubChem | 8182 |
| ChemSpider | 7890 |
| UNII | 11A386X1QH |
| EC number | 203-967-9 |
| DrugBank | DB02771 |
| KEGG | C08374 |
| MeSH | n-dodecane |
| ChEBI | CHEBI:28817 |
| ChEMBL | CHEMBL30959 |
| RTECS number | JR2125000 |
| Beilstein Reference | 1697175 |
| Gmelin Reference | 201408 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C12H26 |
| Molar mass | 170.33 g mol−1 |
| Exact mass | 170.203450832 g mol−1 |
| Appearance | Colorless, transparent liquid |
| Odor | Petrolic |
| Density | 750 mg mL−1 |
| Melting point |
-10--9 °C, 263.2-263.8 K, 14-15 °F |
| Boiling point |
214-218 °C, 487-491 K, 417-424 °F |
| log P | 6.821 |
| Vapor pressure | 40 Pa (at 20 °C) |
| Refractive index (nD) | 1.421 |
| Viscosity | 1.34 mPa s |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
−353.5–−350.7 kJ mol−1 |
| Std enthalpy of combustion ΔcH |
−7901.74 kJ mol−1 |
| Standard molar entropy S |
490.66 J K−1 mol−1 |
| Specific heat capacity, C | 376.00 J K−1 mol−1 |
| Hazards | |
| MSDS | hazard.com |
| GHS pictograms |  |
| GHS signal word | DANGER |
| GHS hazard statements | H304 |
| GHS precautionary statements | P301+310, P331 |
| EU classification |  Xn |
| R-phrases | R65 |
| S-phrases | S62 |
| NFPA 704 |
 2
1
0
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| Flash point | 71 °C |
| Autoignition temperature |
205 °C |
| Related compounds | |
| Related alkanes | |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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, scintillator component. Moreover it is used as a diluent for tributyl phosphate (TBP) in plants reprocessing.[2]
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[edit] Combustion reaction
The combustion reaction of dodecane is as follows:
- 2 C12H26(l) + 37 O2(g) → 24 CO2(g) + 26 H2O(g)
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.
[edit] Jet Fuel Surrogate
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 hydrogen to carbon ratio which better reflect the n-alkane content of jet fuels.
[edit] See also
[edit] References
- ^ "n-dodecane - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=8182&loc=ec_rcs. Retrieved 4 January 2012.
- ^ Rydberg, Jan (2004). Solvent Extraction Principles and Practice. Marcel Dekker. pp. 524. ISBN 0-8247-5063-2.
[edit] External links
- Caudwell, D.R.; Trusler, J.P.M.; Vesovic, V.; Wakeham, W.A. (2003-06-16). "The Viscosity and Density of n-Dodecane and n-Octadecane at Pressures up to 200 mPa and Temperatures up to 473 K" (pdf). NIST. http://symp15.nist.gov/pdf/p175.pdf. Retrieved 2007-10-09.
- Material Safety Data Sheet for Dodecane
- Dodecane, Dr. Duke's Phytochemical and Ethnobotanical Databases
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