CIS-1,2-DIMETHYLCYCLOHEXANE Chemical Properties

Melting point:

-49.99°C

Boiling point:

129-130 °C(lit.)

Density 

0.796 g/mL at 25 °C(lit.)

vapor pressure 

28 mm Hg ( 37.7 °C)

refractive index 

n20/D 1.436(lit.)

Flash point:

54 °F

solubility 

Soluble in acetone, alcohol, benzene, ether, ligroin (Weast, 1986); miscible with cyclohexane and cycloheptane.

pka

>14 (Schwarzenbach et al., 1993)

form 

Liquid

color 

Colorless to Almost colorless

Water Solubility 

It is soluble in water. 6.0 g(1)/106 g(2) at 25°C.

Henry's Law Constant

0.354(atm?m³/mol) at 25 °C (Hine and Mookerjee, 1975)

CAS DataBase Reference

2207-01-4(CAS DataBase Reference)

EPA Substance Registry System

Cyclohexane, 1,2-dimethyl-, (1R,2S)-rel- (2207-01-4)

Safety Information

Hazard Codes 

F,Xn

Risk Statements 

11-65

Safety Statements 

9-16-33-62

RIDADR 

UN 2263 3/PG 2

WGK Germany 

3

TSCA 

Yes

HS Code 

2902.19.0050

HazardClass 

3

PackingGroup 

II

Toxicity

EC50 (48-h) for Daphnia pulex 3,235 μg/L (Smith et al., 1988).

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

CIS-1,2-DIMETHYLCYCLOHEXANE Usage And Synthesis

Chemical Properties

Clear, colorless, flammable liquid with a mild characteristic odor.

Definition

ChEBI: Cis-1,2-dimethylcyclohexane is a cycloalkane.

General Description

cis-1,2-Dimethylcyclohexane has been oxidized by O₂ in the presence of iron(II)-bispidine complexes. It has been known to form plastic crystals which can be supercooled to show a glass transition at a temperature T_g.

Source

Component of gasoline (quoted, Verschueren, 1983)

Environmental Fate

Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. cis-1,2- Dimethylcyclohexane will not hydrolyze because it has no hydrolyzable functional group.

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