Propylene Propene

Propylene is manufactured by steam cracking of hydrocarbons as discussed under ethylene. The best feedstocks are propane, naphtha, or gas oil, depending on price and availability. About 50-75% of the propylene is consumed by the petroleum refining industry for alkylation and polymerization of propylene to oligomers that are added to gasoline. A smaller amount is made by steam cracking to give pure propylene for chemical manufacture. 

Propylene is a colorless, flammable gas with a slightly sweet aroma, bp -47.7°C, flash point -107.8°C, and ignition temperature 497.2°C. It is available in cylinders and tank cars and by pipeline. 

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Toxicity and Environmental Fate Information for Propylene CAS 115-07-1 Sourtes. Propylene (propene) is one of the light ends formed during catalytic and thermal cracking and coking operations, it is usually collected and used as a feedstock to the alkylation unit. Propylene is volatile and soluble in water making releases to both air and water significant. 

Like ethylene, propylene (propene) is a reactive alkene that can be obtained from refinery gas streams, especially those from cracking processes. The main source of propylene, however, is steam cracking of hydrocarbons, where it is coproduced with ethylene. There is no special process for propylene production except the dehydrogenation of propane. 

Many simple alkenes called vinyl monomers undergo polymer-forming (polymerization) reactions Ethylene yields polyethylene, propylene (propene) yields polypropylene, styrene yields polystyrene, and so forth. The polymer molecules that result may have anywhere from a few hundred to many thousand monomer units incorporated into a long chain. Some commercially important polymers are listed in Table 23.3. 

The two simplest alkenes, ethylene (ethene) and propylene (propene), are the organic compounds that are produced in the largest amounts by the U.S. chemical in-... 

Another type of irregularity results if the vinyl monomer that is used to make an addition polymer has two different substituents on one end of the double bond. Propylene (propene), with a hydrogen and a methyl group on one of the vinyl carbons, provides an example. When such a monomer polymerizes, a new stereocenter (an asymmetric carbon chirality center) is created each time a new monomer is added ... 

The names and formulas of the first four unbranched alkenes are presented in Table 20.2. (Common names are often used for the smallest members of each class.) Ethylene (ethene) and propylene (propene) are the raw materials used in the manufacture of the common plastics polyethylene and polypropylene. 

Polypropylene is a plastic made from propylene (propene). It is used to make indoor-outdoor carpeting, packaging materials, toys, and housewares. When... 

EINECS 204-127-4 Hexafluoropropene 1,1,2,3,3,3-Hexafluoro-1-propene Hexafiuoropropyiene HSDB 5582 Perfluoro-1-propene Perfluoropropene Perfluoro-propylene Propene, hexafluoro- 1-Propene, 1,1,2,3,3,3-hexafluoro- R1216 UN1858, Gas mp = -156,5 bp = -29,6" d- " 1,583. 

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