Dodecane (also known as dihexyl, bihexyl, adakane 12, or duodecane) is an oily liquid ''n''-
alkane
In organic chemistry, an alkane, or paraffin (a historical trivial name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which ...
hydrocarbon
In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colourless and hydrophobic, and their odors are usually weak or ex ...
with the chemical formula C
12H
26 (which has 355
isomer
In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers.
Iso ...
s).
It is used as a
solvent
A solvent (s) (from the Latin '' solvō'', "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for ...
,
distillation
Distillation, or classical distillation, is the process of separation process, separating the components or substances from a liquid mixture by using selective boiling and condensation, usually inside an apparatus known as a still. Dry distilla ...
chaser, and
scintillator
A scintillator is a material that exhibits scintillation, the property of luminescence, when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate (i.e. re-emit the absorbed ...
component. It is used as a diluent for
tributyl phosphate
Tributyl phosphate, known commonly as TBP, is an organophosphorus compound with the chemical formula (CH3CH2CH2CH2O)3PO. This colourless, odorless liquid finds some applications as an extractant and a plasticizer. It is an ester of phosphoric ac ...
(TBP) in nuclear reprocessing plants.
Combustion reaction
The combustion reaction of dodecane is as follows:
:2 C
12H
26(''l'') + 37 O
2(''g'') → 24 CO
2(''g'') + 26 H
2O(''g'')
:
Δ''H''° = −7513
kJ
One litre of fuel needs about 15 kg of
air
The atmosphere of Earth is the layer of gases, known collectively as air, retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere. The atmosphere of Earth protects life on Earth by creating pressure allowing f ...
to burn, and generates 2.3 kg (or 1.2 m
3) of CO
2 upon complete combustion.
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 Laminar flame speed is an intrinsic characteristic of premixed combustible mixtures.http://www.clarke-energy.com/2013/laminar-flame-speed/ Laminar Flame Speed It is the speed at which an un-stretched laminar flame will propagate through a quiescent ...
, 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 fuel
Jet fuel or aviation turbine fuel (ATF, also abbreviated avtur) is a type of aviation fuel designed for use in aircraft powered by gas-turbine engines. It is colorless to straw-colored in appearance. The most commonly used fuels for commercial a ...
s.
See also
*
Higher alkanes
Higher alkanes are alkanes having nine or more carbon atoms. Nonane is the lightest alkane to have a flash point above 25 °C, and is not classified as dangerously flammable.
The term ''higher alkanes'' is sometimes used literally as "alkanes ...
*
Kerosene
Kerosene, paraffin, or lamp oil is a combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in aviation as well as households. Its name derives from el, κηρός (''keros'') meaning "wax", and was regi ...
*
List of isomers of dodecane
This is the list of 355 isomers of dodecane. Straight chain
*Dodecane
Undecane
* 2-Methylundecane
* 3-Methylundecane
* 4-Methylundecane
* 5-Methylundecane
* 6-Methylundecane
Decane Dimethyl
* 2,2-Dimethyldecane
* 2,3-Dimethyldecane
* 2,4-Dimet ...
References
External links
*
Material Safety Data Sheet for DodecaneDodecane Dr. Duke's Phytochemical and Ethnobotanical Databases
{{Authority control
Alkanes
Hydrocarbon solvents