Pentane


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Related to Pentane: hexane

Pentane

 

an acyclic saturated hydrocarbon with the empirical formula C5H12. Pentane occurs in three isomeric forms: n-pentane, CH3(CH2)3CH3 (boiling point 36.07°C, melting point -129.72°C, density 0.6260 gm/cm3 at 20°C), of isopen-tane, (CH3)2CHCH2CH3 (boiling point 27.85°C, melting point -159.7°C, density 0.6197 gm/cm3 at 20°C, and neopentane, (CH3)4C (boiling point 9.50°C, melting point - 16.55”C, density 0.5910°C gm/cm3 at 20°C).

Pentanes are isolated from the condensates of natural gas, from petroleum, from the light fractions of shale oil, and from hydrocarbons that are synthesized from synthesis gas, a mixture of CO and H2. Heating in the presence of HF, AlCl3, or an aluminum-platinum catalyst converts n-pentane into isopentane, the raw material from which isoprene is obtained. Pentanes are constituents of motor fuels and the starting materials in many petrochemical processes and basic organic synthesis.

References in periodicals archive ?
Safari Rad the development makes Iran the first Middle East and Persian Gulf state to produce pentane, saying the strategic item has several applications in petrochemical and chemical industries and is valued several times a barrel of crude oil.
The result has been an upsurge in output of very light liquid fuels variously described as light condensate, drip gas, pentanes plus or natural gasoline, which compete head one with the light naphtha traditionally produced by oil refineries, an essential component in the production of both motor gasoline and petrochemicals.
These have been produced using Oxid technology that overcomes the inherently low solubility of pentanes in polyester polyols and also allows for higher functionality.
To stay frozen, the pentane would require a refrigeration system that could maintain the pentane at nearly 200[degrees]C below the freezing point of water.
We therefore developed an analytical method using SPME coupled to ion-trap detection to assess trace amounts of the hydrocarbons isoprene and pentane, the ketone acetone, the volatile anesthetic isoflurane, and the thioether dimethyl sulfide in the blood of humans and laboratory animals.
A standard reference correlation for the viscosity of saturated liquid n pentane will make it possible to use this fluid for calibrations of sealed gravitational capillary viscometers.
The expanded bead pentane level and density can have a significant influence on pattern quality from a visual, dimensional and casting defect standpoint.
Spain, Britain, Italy, Belgium, the Netherlands, Turkey, Taiwan, China, South Korea, Indonesia, Malaysia, Armenia, Azerbaijan, Saudi Arabia, Syria, India and Iraq are among the main countries importing Iran`s petrochemical products which include propane, butane, pentane, benzene, ethylene, light polyethylene, heavy polyethylene and plastic, he added.
PIR boardstock manufacturers have the opportunity to reduce costs while maintaining or enhancing performance through their selection of pentane blowing agent, according to a study by Huntsman Advanced Technology Center.
Construction--"Long term thermal resistance of pentane blown polyisocyanurate laminate boards," Sachchida N.
Low-volatile EPS products--those with a pentane level of 4.
Carbon dioxide and pentane (a highly flammable chemical that contributes to smog) are also used as blowing agents.