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| CAS No.: | 115-07-1 |
|---|---|
| Name: | Propylene |
| Article Data: | 1 |
| Molecular Structure: | |
|
|
|
| Formula: | C3H6 |
| Molecular Weight: | 42.0806 |
| Synonyms: | Propene(8CI);1-Propylene;HC 1270;Methylethylene;R 1270;1-Propene; |
| EINECS: | 204-062-1 |
| Density: | 0.575 g/cm3 |
| Melting Point: | -185 °C(lit.) |
| Boiling Point: | -47.7 °C(lit.) |
| Flash Point: | -108 °C |
| Solubility: | Soluble in alcohol and ether, slightly soluble in water |
| Appearance: | colorless gas with a faint petroleum like odor |
| Hazard Symbols: |
 F+
|
| Risk Codes: | 12 |
| Safety: | 9-16-33 |
| Transport Information: | UN 1077 |
| PSA: | 0.00000 |
| LogP: | 1.19230 |
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Consensus Reports
IARC Cancer Review: Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . NTP Carcinogenesis Studies (inhalation); No Evidence: mouse, rat NTPTR* National Toxicology Program Technical Report Series. (Research Triangle Park, NC 27709) No. NTP-TR-272 ,1985. . Reported in EPA TSCA Inventory.
Standards and Recommendations
ACGIH TLV: Asphyxiant; Not Classifiable as a Human Carcinogen; (Proposed: 500 ppm; Not Classifiable as a Human Carcinogen)
DOT Classification: 2.1; Label: Flammable Gas
Specification
Propene, also called propylene, is a colorless, flammable gas with a faint petroleum like odor being soluble in alcohol and ether, slightly soluble in water. It lacks strongly polar bonds, yet the molecule has a small dipole moment due to its reduced symmetry (its point group is Cs). Propene resembles other alkenes in that it undergoes addition reactions relatively easily at room temperature. Alkene reactions include: 1) polymerization, 2) oxidation, 3) halogenation and hydrohalogenation, 4) alkylation, 5) hydration, 6) oligomerization, and 7) hydroformylation.
Preparation: Propene can be produced by refinery catalytic cracking gas. While remove the C2 and C4 cut fraction by distillation, the propylene and propane cut fraction can be obtained. Then, after rectification, people can get the product. Another important source of Propene is propane dehydrogenation. This process needs catalysts chromium oxide-alumina and reaction temperature 635 °C. The propane percent conversion is 54%, Propene selectivity is 76% and recovery is 93% (molecular ratio). This route is popular in the Middle East, because there is an abundance of propane from oil/gas operations.
Uses: After ethylene, Propene is the second most important starting product in the petrochemical industry. It is used as as important organic chemical raw material to produce a variety of products, such as acrylonitrile, epoxypropane, cumene, isopropyl alcohol, glycerol, acetone, butanol, octanol, acrolein, acrylic acid, propylene alcohol, glycerol, polypropylene, etc. In the petroleum refining industry, it is also the raw material in the preparation of composite gasoline. Propene is, for example, needed for the production of synthetic resin, synthetic fiber, synthetic rubber and a variety of fine chemicals. Besides, it is also used for environmental protection, medical science, basic research and other fields.
Safty: It is extremely flammable, so people should keep away from sources of ignition and keep container in a well-ventilated place. It has low acute toxicity from inhalation. Inhalation of the gas can cause anesthetic effects and at very high concentrations, unconsciousness. When using it, you must take precautionary measures against static discharges.
Structure Descriptors:
1. Smiles:C(C)=C
2. InChI:InChI=1/C3H6/c1-3-2/h3H,1H2,2H3
Toxicity:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LC | inhalation | > 86gm/m3/4H (86000mg/m3) | IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. Vol. 60, Pg. 161, 1994. |