petroleum ether การใช้

• Is it really the same thing as petroleum ether?
• Exposure to petroleum ether occurs most commonly by either inhalation or through skin contact.
• Petroleum ether degrades rapidly in soil and water.
• In a typical setup 50 grams dl-methadone is dissolved in petroleum ether and concentrated.
• Petroleum ether is metabolized by the liver with a biological half-life of 46 48 h.
• It is synthesized by the reaction of hydrogen cyanide and barium hydroxide in water or petroleum ether.
• It is soluble in benzene, acetone, ether, and petroleum ether, and insoluble in water.
• Oleic and linoleic acids isolated from " C . colocynthis " petroleum ether extracts show larvicidal activity against mosquitoes.
• It is almost insoluble in cold water, slightly soluble in petroleum ether, and more soluble in polar organic solvents.
• Products with low viscosity such as hexane and other volatile hydrocarbons ( petroleum ether ) present an extreme vomits around the lavage tube.
• Petroleum ether is obtained from petroleum refineries as the portion of the distillate which is intermediate between the lighter naphtha and the heavier kerosene.
• Adding petroleum ether induces the crystallization of the less soluble diastereomeric salt, the S-enantiomer of Example 20 ( Example 47 ).
• It is soluble in about 800 parts water and is miscible with alcohol, benzene, chloroform, ether, petroleum ether, acetone, and oils.
• The research discussed how several chemical compounds could be isolated from " P . ellipsoideus " with petroleum ether and ( after defatting ) chloroform.
• If I leave the jar without a lid in a ventilated place, will all the petroleum ether or ligroin evaporate fully or will something be left behind?
• Another property of colocynth is hair growth stimulation : an experiment on rats demonstrated that hair growth initiation time was significantly decreased after treatment with colocynth petroleum ether extracts.
• Diethyl ether should not be confused with petroleum ether ( a crude oil distillate consisting mostly of pentane and other alkanes ) which has also been used for starting engines.
• In general, the toxicity is more pronounced with petroleum ethers containing higher concentrations of aromatic compounds . n-Hexane is known to cause axonal damage in peripheral nerves.
• Lecithin can easily be extracted chemically using any non-polar solvent such as hexane, ethanol, acetone, petroleum ether, benzene, etc ., or extraction can be done mechanically.
• In this method, oils from the algae are extracted through repeated washing, or percolation, with an organic solvent such as hexane or petroleum ether, under reflux in a special glassware.