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Pentane
(redirected from Pentanes)

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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.
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These have been produced using Oxid technology that overcomes the inherently low solubility of pentanes in polyester polyols and also allows for higher functionality.
Fine-tuning insulation foams: thermal insulation has become ... by Sherman, Lilli Manolis / Plastics Technology
Even though pentanes are inexpensive, a question has arisen as to whether a flammable blowing agent can be made into a substance that can be incorporated into a Class-1 fire-rated system.
The changing face of cold storage by LITWAK, DAVID / Grocery Headquarters
Working with some major polyol and surfactant suppliers, the company sees potential in other rigid foam sectors, such as replacement of pentanes in boardstock; in spray foams, where the cost of HFC-245fa is a concern; and perhaps even in the more conservative appliance sector.
Polyurethanes: fine-tuning 'green' foams: with the switch to ... by Sherman, Lilli Manolis / Plastics Technology
 
 
 
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