Hexadecane, also called cetane, is an alkanehydrocarbon with the chemical formula CH3(CH2)14CH3. Hexadecane consists of a chain of 16 carbon atoms, with three hydrogen atoms bonded to the two end carbon atoms, and two hydrogens bonded to each of the 14 other carbon atoms. CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ... EC numbers (Enzyme Commission numbers) are a numerical classification scheme for enzymes, based on the chemical reactions they catalyze. ... link title Headline text Bold textItalic textItalic textInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text hereInsert non-formatted text here--220. ... General Name, Symbol, Number Mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12 (IIB), 6 , d Density, Hardness liquid 13. ... An alkane in organic chemistry is a type of hydrocarbon in which the molecule has the maximum possible number of hydrogen atoms and so has no double bonds (they are saturated). ... In chemistry, a hydrocarbon is a group of chemical compounds consisting only of carbon (C) and hydrogen (H). ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ...
Cetane is often used as a short-hand for cetane number, a measure of the combustibility of diesel fuel. Cetane ignites very easily under compression; for this reason, it is assigned a cetane number of 100, and serves as a reference for other fuel mixtures. Cetane number or CN is to diesel fuel what octane rating is to gasoline. ...
External links
Material Safety Data Sheet for Hexadecane (http://physchem.ox.ac.uk/MSDS/HE/hexadecane.html)
methane CH4 An alkane in organic chemistry is a type of hydrocarbon in which the molecule has the maximum possible number of hydrogen atoms and so has no double bonds (they are saturated). ... The simplest hydrocarbon, methane, is a gas with a chemical formula of CH4. ...
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ethane C2H6 Ethane is a chemical compound with chemical formula C2H6. ...
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propane C3H8 A three-carbon alkane, propane is sometimes derived from other petroleum products during oil or natural gas processing. ...
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butane C4H10 Butane is an alkane hydrocarbon with the molecular formula C4H10. ...
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pentane C5H12 Pentane (also known as amyl hydride or skellysolve) is an alkane hydrocarbon with the chemical formula CH3(CH2)3CH3. ...
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hexane C6H14 Hexane is an alkane hydrocarbon with the chemical formula CH3(CH2)4CH3. ...
heptane C7H16 Heptane (also known as dipropyl methane, gettysolve-C or heptyl hydride) is an alkane hydrocarbon with the chemical formula CH3(CH2)5CH3. ...
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octane C8H18 Octane is an alkane hydrocarbon with the chemical formula CH3(CH2)6CH3. ...
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nonane C9H20 Nonane is an alkane hydrocarbon with the chemical formula CH3(CH2)7CH3. ...
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decane C10H22 Decane is an alkane hydrocarbon with the chemical formula CH3(CH2)8CH3. ...
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undecane C11H24 Undecane (also known as hendecane) is an alkane hydrocarbon with the chemical formula CH3(CH2)9CH3. ...
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dodecane C12H26 Dodecane (also known as dihexyl, bihexyl, adakane 12 or duodecane) is an alkane hydrocarbon with the chemical formula CH3(CH2)10CH3, a thick, oily liquid of the paraffin series. ...
tridecane C13H28 Tridecane is an alkane hydrocarbon with the chemical formula CH3(CH2)11CH3. ...
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tetradecane C14H30 Tetradecane is an alkane hydrocarbon with the chemical formula CH3(CH2)12CH3. ...
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pentadecane C15H32 Pentadecane is an alkane hydrocarbon with the chemical formula CH3(CH2)13CH3. ...
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hexadecane C16H34
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heptadecane C17H36 Heptadecane is an alkane hydrocarbon with the chemical formula CH3(CH2)15CH3. ...
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octadecane C18H38 Octadecane is an alkane hydrocarbon with the chemical formula CH3(CH2)16CH3. ...
nonadecane C19H40 Nonadecane is an alkane hydrocarbon with the chemical formula CH3(CH2)17CH3. ...
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eicosane C20H42 Eicosane (also known as icosane or didecyl) is an alkane hydrocarbon with the chemical formula CH3(CH2)18CH3. ...
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heneicosane C21H44
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docosane C22H46 Docosane is an alkane hydrocarbon with the chemical formula CH3(CH2)20CH3. ...
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tricosane C23H48 Tricosane is an alkane hydrocarbon with the chemical formula CH3(CH2)21CH3. ...
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tetracosane C24H50 Tetrakosane Tetra*ko*sane`, n. ...
pentacosane C25H52
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hexacosane C26H54 Hexeikosane Hex*eiko*sane, n. ...
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heptacosane C27H56 Heptacosane is an alkane hydrocarbon with the structural formula CH3(CH2)25CH3. ...
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octacosane C28H58
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nonacosane C29H60 Nonacosane is a straight-chain hydrocarbon with a molecular formula of C29H60, and a CAS-No of 630-03-5. ...
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triacontane C30H62
hentriacontane C31H64 Hentriacontane is a long-chain alkane hydrocarbon with the chemical formula CH3(CH2)29CH3. ...
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dotriacontane C32H66 Dotriacontane is an alkane hydrocarbon with the structural formula CH3(CH2)30CH3. ...
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tritriacontane C33H68 Tritriacontane is a naturally ocurring antioxidant. ...
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tetratriacontane C34H70
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pentatriacontane C35H72
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hexatriacontane C36H74 Hexatriacontane is an alkane hydrocarbon with the structural formula CH3(CH2)34CH3. ...
It is the % volume of cetane (n-hexadecane, Cetane Number = 100) in alpha methyl naphthalene (Cetane Number = 0), that provides the specified standard of 13 degrees (crankshaft angle) ignition delay at the identical compression ratio to that of the fuel sample.
The cetane number is then determined by interpolation, and the higher the Cetane Number, the shorter the delay between injection and ignition.
The significance of the cetane number increases with the speed of the engine, and large, low speed diesel engines often only specify viscosity, combustion and contaminant levels, as Cetane Number requirement of the engine is met by most distillate and residual fuels that have the appropriate propeties.
Cetane number is a measure of the ignition and combustion quality of dieselfuel; the higher the cetane number, the more efficiently the engine operates.
A cetane number of 40 is a common specification in contracts and for pipelines, while a higher cetane number is often required by fleet operators for over-the-road operations.
While the effective treating rate depends on the base cetane number of the fuel and the amount of cetane increase desired, a rule of thumb is that a treat rate of 600 ppm will improve the cetane number of a dieselfuel by three numbers.
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