Petroleum ether
Encyclopedia : P : PE : PET : Petroleum ether
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 | [8032-32-4] |
| 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: R12, R38, R51/53, R62, R65, R67 S: S9, S16, S23, S24, S33, S62 |
| 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 infoboxInfobox disclaimer and references] | |
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
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
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