Benzine redirects here. For the Rammstein single, see Benzin.

Petroleum ether
General
Systematic name	Petroleum ether
Other names	Benzine Ligroine Naphtha petroleum
Molecular formula	Hydrocarbon
Molar mass	87 to 90 g/mol
Appearance	Colorless liquid
CAS number	*
Properties
Density and phase	0.6 to 0.8 g/cm3, liquid
Solubility in water	Insoluble
Melting point	< -73 °C
Boiling point	20 to 75 °C
Viscosity	? cP at ? °C
Hazards
MSDS	External MSDS
Main hazards	Highly flammable carcinogenic irritant
NFPA 704
Flash point	-18 °C
R/S statement	R: , , , , , S: , , , , ,
RTECS number	?
Related compounds	diethyl ether
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Chemical infobox

Petroleum ether, also known as benzine, is a group of various volatile, highly flammable, liquid hydrocarbon mixtures used chiefly as nonpolar solvents.

Petroleum ether is obtained from petroleum refineries as the portion of the distillate which is intermediate between the lighter naphtha and the heavier kerosene. It has a specific gravity of between 0.6 and 0.8 depending on its composition.

Benzine should not be confused with benzene. Benzine is a mixture of alkanes, e.g., pentane, hexane, and heptane, whereas benzene is a cyclic, aromatic hydrocarbon, C₆H₆. Likewise, petroleum ether should not be confused with the class of organic compounds called ethers, which contain the -O- functional group.

Ligroin

---

Ligroin is a refined saturated hydrocarbon petroleum fraction similar to petroleum ether used mainly as a laboratory solvent. It predominantly consists of C₇ through C₁₁ in the form of about 55% paraffins, 30% monocycloparaffins, 2% dicycloparaffins and 12% alkylbenzenes. It is nonpolar. Generally laboratory grade ligroin boils at 60 to 90 °C.

External links

---

Alkanes | Solvents

Petrolether | ベンジン | Xăng ête