What is propylene? What is it used for?

1. Propylene

1. Name of the chemical
Chemical Chinese Name: Propylene
Chemical English name: propylene
Chinese name 2:
English name 2: propene
Technical specification code: 31
CAS No.: 115-07-1
Molecular formula: C3H6
Molecular weight: 42.081
Chemical equation for propylene combustion: 2C3H6+9O2=6CO2+6H2O

2. Composition/composition information Hazardous ingredients CAS No.
Propylene 115-07-1

3. Physical and chemical properties
Main ingredients: Pure appearance and traits: Colorless, hydrocarbon-like 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
Logarithm of the octanol/water partition coefficient: No data flash point (°C): -108
Ignition temperature (°C): 455
Upper explosion limit % (V/V): 11.7
Lower explosion limit % (V/V): 2.0
Solubility: Soluble in water and ethanol.

Other physical and chemical properties: In addition to reacting on the olefinic bond, propylene can also react on the methyl group. Propylene is polymerized in the presence of an acidic catalyst (sulfuric acid, anhydrous hydrofluoric acid, etc.) to form a mixture of dimers, trimers, and tetramers, which can be used as a high octane fuel. Propylene is polymerized in the presence of a Ziegler catalyst to form polypropylene. Propylene and ethylene are copolymerized to form ethylene propylene rubber. Propylene reacts with sulfuric acid to form isopropyl sulfuric acid, which is hydrolyzed to form isopropanol: propylene reacts with chlorine and water to form 1-chloro-2-propanol, which reacts with a base to form an epoxy Propane, adding water to form propylene glycol: propylene is reacted with benzene in the presence of an acidic catalyst to form cumene C6H5CH(CH3)2, which is a raw material for the synthesis of phenol and acetone. Propylene can be hydrolyzed with isobutane in the presence of an acidic catalyst (sulfuric acid, hydrofluoric acid, etc.), and the resulting branched alkane can be used as a high-octane fuel. Propylene is ammoxidized with ammonia in the presence of a catalyst in the presence of a catalyst to form acrylonitrile, which is a raw material for synthesizing high polymers such as plastics, rubber, and fibers. Propylene is chlorinated at a high temperature to form allyl chloride CH2=CHCH2Cl, which is a raw material for the synthesis of glycerin.

Second, the main purpose

The largest use of propylene is in the production of polypropylene, and propylene can be used to 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.