Tetracosane

Structural formula
General
Surname	Tetracosane
other names	Evenkit n -Tetracosane
Molecular formula	C 24 H 50
Brief description	colorless, crystalline solid
External identifiers / databases
CAS number 646-31-1 EC number 211-474-5 ECHA InfoCard 100.010.432 PubChem 12592 Wikidata Q150988
properties
Molar mass	338.66 g mol −1
Physical state	firmly
density	0.80 g cm −3
Melting point	49-52 ° C
boiling point	391 ° C
solubility	almost insoluble in water
Refractive index	1.4283 (70 ° C)
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Tetracosane ( n -Tetracosane ) is a long-chain, unbranched and saturated alkane . It is one of the few organic compounds that occur naturally as a mineral . This mineral is called Evenkite and was discovered in 1953 in the area of ​​the Lower Tunguska River in Siberia .

description

Pure tetracosane is colorless, but can take on a yellowish-green to yellowish-white color due to foreign admixtures. It has the empirical formula C ₂₄ H ₅₀ corresponding to [(CH ₃ ) ₂ (CH ₂ ) ₂₂ ] and thus belongs to the hydrocarbons , more precisely to the chain alkanes . The crystal system is monoclinic.

Individual evidence

1. ↑ ^{a b c d e f g} Datasheet Tetracosan at AlfaAesar, accessed on February 27, 2013 ( PDF )(JavaScript required) .
2. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-470.