What is propylene? Its use?

One, propylene

1, chemical name
Chemicals Chinese Name: Acrylic
Chemical English name:
Chinese name 2:
English name 2: propene
Technical specification code: 31
CAS No.: 115-07-1
Molecular formula: C3H6
Molecular Weight: 42.081
Propylene combustion chemical equation: 2C3H6+9O2=6CO2+6H2O

2. Composition/composition information on harmful components CAS No.
Propylene 115-07-1

3, physical and chemical properties
Ingredients: Pure Appearance and Properties: Colorless, hydrocarbon odor gas.
pH:
Melting point (°C): -191.2
Boiling Point (°C): -47.72
Relative density (water = 1): 0.5
Relative vapor density (air = 1): 1.48
Saturated vapor pressure (kPa): 602.88 (0°C)
Heat of combustion (kJ/mol): 2049
Critical temperature (K): 364.75
Critical pressure (MPa): 4.550
Octanol/water partition coefficient logarithmic value: no data flash point (°C): -108
Ignition temperature (°C): 455
Explosive Limit%(V/V): 11.7
Lower explosion limit (V/V): 2.0
Solubility: Soluble in water, ethanol.

Other physicochemical properties: Propylene can also react on methyl groups in addition to reacting on olefinic bonds. Propylene is polymerized in the presence of an acidic catalyst (sulfuric acid, anhydrous hydrofluoric acid, etc.) to produce a mixture of dimers, trimers and tetramers that can be used as a high octane fuel. Propylene is polymerized to form polypropylene in the presence of a Ziegler catalyst. Propylene and ethylene are copolymerized to produce ethylene propylene rubber. Propylene reacts with sulfuric acid to generate isopropyl sulfate, which is hydrolyzed to isopropanol: propylene reacts with chlorine and water to form 1-chloro-2-propanol, which reacts with alkali to form epoxy. Propane, adding water to produce propylene glycol: Propylene reacts with benzene in the presence of an acidic catalyst to produce cumene C6H5CH(CH3)2, which is a raw material for the synthesis of phenol and acetone. Propylene can react with isobutane in the presence of acidic catalysts (sulfuric acid, hydrofluoric acid, etc.) and the resulting branched alkane can be used as a high octane fuel. Propylene reacts with ammonia and oxygen in the air in the presence of a catalyst to oxidize ammonia to form acrylonitrile, which is a raw material for the synthesis of polymers such as plastics, rubber, and fibers. Propylene is chlorinated at high temperatures to produce allyl chloride CH2=CHCH2Cl, which is a raw material for the synthesis of glycerol.

Second, the main purpose

The largest use of propylene is in the production of polypropylene. In addition, propylene can produce acrylonitrile, isopropanol, phenol and acetone, butanol and octanol, acrylic acid and its lipids, as well as propylene oxide and propylene glycol, epichlorohydrin and synthetic glycerol. Wait.