3-methylhexane

Structural formula
Representation without stereochemistry
General
Surname	3-methylhexane
other names	2-ethylpentane
Molecular formula	C 7 H 16
Brief description	highly flammable, volatile liquid
External identifiers / databases
CAS number 589-34-4 78918-91-9 ( R ) -3-methylhexane 6131-24-4 ( S ) -3-methylhexane EC number 209-643-3 ECHA InfoCard 100,008,768 PubChem 11507 Wikidata Q223103
properties
Molar mass	100.21 g mol −1
Physical state	liquid
density	0.69 g cm −3
Melting point	−119 ° C
boiling point	92 ° C
Vapor pressure	255 h Pa (50 ° C)
solubility	practically insoluble in water (2.6 mg l −1 at 25 ° C)
Refractive index	1.388 (20 ° C)
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 225-304-315-336-410 P: 210-261-273-301 + 310-331-501
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

3-methylhexane is a chemical compound from the group of aliphatic saturated hydrocarbons . It is one of the isomers of n- heptane , has a center of chirality at C-3 and occurs in both enantiomeric forms ( R ) - and ( S ) -3-methylhexane.

use

3-Methylhexane is used as an intermediate in the production of other chemical compounds such as the halogenated derivatives of the compound.

Chirality

3-methylhexane is (together with 2,3-dimethylpentane ) the simplest alkane that exhibits the phenomenon of chirality . At C-3 there is an asymmetric carbon atom whose four substituents are a methyl , an ethyl and a propyl radical , as well as an H atom.

safety instructions

The vapors of 3-methylhexane can form an explosive mixture with air ( flash point approx. −11 ° C, ignition temperature 280 ° C).

literature

• Robert L. Burwell Jr., Howard A. Porte, William M. Hamilton: Racemization, Isomerization and Isotopic Exchange of (+) 3-Methylhexane on a Silica-Alumina Catalyst. In: Journal of the American Chemical Society. 81, 1959, p. 1828, doi : 10.1021 / ja01517a015 .

Individual evidence

1. ↑ ^{a b c d e f g h} Entry on 3-methylhexane in the GESTIS substance database of the IFA , accessed on January 8, 2018(JavaScript required) .
2. ↑ ^{a b} Data sheet 3-Methylhexane from Sigma-Aldrich , accessed on July 22, 2010 ( PDF ).