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| CAS No.: | 624-64-6 |
|---|---|
| Name: | 2-BUTENE |
| Article Data: | 827 |
| Molecular Structure: | |
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| Formula: | C4H8 |
| Molecular Weight: | 56.1075 |
| Synonyms: | 2-Butene,(E)- (8CI);2-Butene, trans- (3CI);(E)-2-Butene;2-trans-Butene;2-trans-Butylene;trans-1,2-Dimethylethylene;trans-2-Butene;trans-2-Butylene;trans-Butene;trans-butene-2; |
| EINECS: | 203-452-9 |
| Density: | 0.636 g/cm3 |
| Melting Point: | -140 °C(lit. ) |
| Boiling Point: | 3.719 °C at 760 mmHg |
| Flash Point: | <−30 °F |
| Solubility: | insoluble in water |
| Appearance: | colourless gas |
| Hazard Symbols: |
 F
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| Risk Codes: | 12-11 |
| Safety: | 9-16-33-38 |
| Transport Information: | UN 1012 |
| PSA: | 0.00000 |
| LogP: | 1.58240 |
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Specification
The 2-Butene, (2E)-, with the CAS registry number of 624-64-6, is also known as 2-trans-Butene. It belongs to the product categories of Gas Cylinders; Hydrocarbons (Low Boiling Point); Synthetic Organic Chemistry; Chemical Synthesis; Compressed and Liquefied Gases; Synthetic Reagents. Its EINECS registry number is 203-452-9. This chemical's molecular formula is C4H8 and molecular weight is 56.11. What's more, its IUPAC name is (E)-But-2-ene. In addition, it should be stored in gas cylinder at cool place.
Physical properties about 2-Butene, (2E)- are: (1)ACD/LogP: 2.34; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.336; (4)ACD/LogD (pH 7.4): 2.336; (5)ACD/BCF (pH 5.5): 35.094; (6)ACD/BCF (pH 7.4): 35.094; (7)ACD/KOC (pH 5.5): 444.321; (8)ACD/KOC (pH 7.4): 444.321; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 0 Å2; (13)Index of Refraction: 1.384; (14)Molar Refractivity: 20.638 cm3; (15)Molar Volume: 88.177 cm3; (16)Polarizability: 8.182×10-24 cm3; (17)Surface Tension: 16.795 dyne/cm; (18)Density: 0.636 g/cm3; (19)Melting Point: -140 °C(lit. ); (20)Enthalpy of Vaporization: 23.34 kJ/mol; (21)Boiling Point: 3.719 °C at 760 mmHg; (22)Vapour Pressure: 1595.904 mmHg at 25 °C.
Preparation: this chemical is prepared by But-1-ene at ambient temperature. The reaction needs reagent Tetrakis(acetonitrile)palladium ditetrafluoroborate and solvent Acetonitrile. The reaction time is 1 hour. The yield is about 67 %.
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Uses: (1)it can be used as standard substance of gas chromatograph. (2)it is used to produce other chemicals. For example, it is used to produce (2RS, 3SR)-2-Chloro-3-methylsulfanyl-butane. Other conditions of this reaction are 1.)CCl4, -20 °C; 2.)room temperature, 2 hours. The yield is about 70 %.
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When you are using this chemical, please be cautious about it as the following: this chemical is highly flammable, it may catch fire in contact with an ignition source. Hence, keep it away from sources of ignition. What's more, it must be stored in airtight containers and placed in a well-ventilated place. In case of insufficient ventilation wear suitable respiratory equipment.
You can still convert the following datas into molecular structure:
(1) SMILES: C/C=C/C
(2) InChI: InChI=1/C4H8/c1-3-4-2/h3-4H,1-2H3/b4-3+
(3) InChIKey: IAQRGUVFOMOMEM-ONEGZZNKBD