NationMaster - Encyclopedia: Tetracosane

**Tetracosane**

A sample of evenkite, the mineral form of n-tetracosane
General
Molecular formula	C₂₄H₅₀
CAS number	646-31-1
Molecular weight	338.659
Physical characteristics
Melting point	52 °C
Boiling point	391.3 °C
Flashpoint	>110 °C

Tetracosane, also called tetrakosane, is an alkane hydrocarbon with the structural formula CH₃(CH₂)₂₂CH₃. As with other alkanes, its name is derived from Greek for the number of carbon atoms, 24, in the molecule. Image File history File links Mineraly. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ... The molecular mass of a substance (less accurately called molecular weight and abbreviated as MW) is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ... Chemical structure of methane, the simplest alkane Alkanes are chemical compounds that consist only of the elements carbon (C) and hydrogen (H) (i. ... Oil refineries are key to obtaining hydrocarbons; crude oil is processed through several stages to form desirable hydrocarbons, used in fuel and other commercial products. ... The structural formula of a chemical compound is a graphical representation of the molecular structure showing how the atoms are arranged. ...

n-Tetracosane, is found as a mineral called Evenkite in the Evenki Region on Lower Tunguska River in Siberia and the Bucnik quarry near Konma in eastern Moravia, in former Czechoslovakia. Evenkite is found as colourless flakes and is reported to fluoresce yellow-orange.

External links

NIST Entry

v • d • e Alkanes
Methane CH₄ Chemical structure of methane, the simplest alkane Alkanes are chemical compounds that consist only of the elements carbon (C) and hydrogen (H) (i. ... Methane is a chemical compound with the molecular formula CH4. ...	\|		Ethane C₂H₆ Ethane is a chemical compound with chemical formula C2H6. ...	\|		Propane C₃H₈ Propane is a three-carbon alkane, normally a gas, but compressible to a liquid that is transportable. ...	\|		Butane C₄H₁₀ Butane, also called n-butane, is the unbranched alkane with four carbon atoms, CH3CH2CH2CH3. ...	\|		Pentane C₅H₁₂ Pentane (also known as amyl hydride or skellysolve) is an alkane hydrocarbon with the chemical formula CH3(CH2)3CH3. ...	\|		Hexane C₆H₁₄ the 3rd ingredient in big mac ...
Heptane C₇H₁₆ R-phrases , , , , S-phrases , , , , , , , Flash point âˆ’4 Â°C Autoignition temperature 285 Â°C Explosive limits 1. ...	\|		Octane C₈H₁₈ Octane is an alkane with the chemical formula CH3(CH2)6CH3. ...	\|		Nonane C₉H₂₀ Nonane is an alkane hydrocarbon with the chemical formula CH3(CH2)7CH3. ...	\|		Decane C₁₀H₂₂ Decane is an alkane hydrocarbon with the chemical formula CH3(CH2)8CH3. ...	\|		Undecane C₁₁H₂₄ Undecane (also known as hendecane) is an alkane hydrocarbon with the chemical formula CH3(CH2)9CH3. ...	\|		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. ...

Categories: Alkanes | Organic minerals | Hydrocarbon stubs

Results from FactBites:

200507 (206 words)
	Bubble-point curves, dew-point curves and solid + fluid/fluid boundary curves of methane + tetracosane + triacontane were determined according to the synthetic method in the temperature range 320–475K and at pressures up to 200MPa.
	Two series of quasi-binary systems of constant methane mole fraction with mixtures of tetracosane and triacontane with composition varying between pure tetracosane and pure triacontane were studied.
	A gradual isothermal substitution of tetracosane by triacontane at constant mole fraction methane increases the bubble-point pressure and the dew-point pressure, while the liquidus temperature at constant pressure passes through a minimum.

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