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| CAS No.: | 503-17-3 |
|---|---|
| Name: | 2-Butyne |
| Article Data: | 109 |
| Molecular Structure: | |
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|
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| Formula: | C4H6 |
| Molecular Weight: | 54.0916 |
| Synonyms: | 2-Butine(3CI); Dimethylacetylene |
| Density: | 0.694g/cm3 |
| Melting Point: | -32 °C |
| Boiling Point: | 25.6°Cat760mmHg |
| Flash Point: | °C |
| Appearance: | clear colorless to light yellow liquid |
| Hazard Symbols: | R12:Extremely flammable.; R36/37:Irritating to eyes and respiratory system.; |
| Risk Codes: | R12;R36/37; |
| Safety: | A simple asphyxiant. Very dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. Moderately explosive in the form of vapor when exposed to heat or flame. To fight fire, use foam, CO2, dry chemicals. See also ACETYLENE COMPOUNDS and ALKYNES and ARGON (for a description of simple asphyxiants). |
| PSA: | 0.00000 |
| LogP: | 1.02960 |
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Chemistry
Product Name: Crotonylene (CAS NO.503-17-3)
Molecular Formula: C4H6
Molecular Weight: 54.09g/mol
Mol File: 503-17-3.mol
Einecs: 207-962-2
Melting Point: -32 °C
Boiling point: 25.6 °C at 760 mmHg
Storage Temperature: 2-8°C
Density: 0.691 g/mL at 25 °C(lit.)
Refractive index: n20/D 1.393(lit.)
Surface Tension: 22.4 dyne/cm
Enthalpy of Vaporization: 26.04 kJ/mol
Vapour Pressure: 745 mmHg at 25°C
XLogP3-AA: 1.5
H-Bond Donor: 0
H-Bond Acceptor: 0
Product Categories: Acetylenic Hydrocarbons; Acetylenes
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
A simple asphyxiant. Very dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. Moderately explosive in the form of vapor when exposed to heat or flame. To fight fire, use foam, CO2, dry chemicals. See also ACETYLENE COMPOUNDS and ALKYNES and ARGON (for a description of simple asphyxiants).
Safety Information of Crotonylene (CAS NO.503-17-3):
Hazard Codes: F+.gif){kind=small}
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Risk Statements: 12-36/37/38
12: Extremely Flammable
36: Irritating to the eyes
37: Irritating to the respiratory system
38: Irritating to the skin
Safety Statements: 16-26-36
16: Keep away from sources of ignition - No smoking
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
Standards and Recommendations
DOT Classification: 3; Label: Flammable Liquid
Specification
Crotonylene ,its CAS NO. is 503-17-3,the synonyms is 2-Butyne ; Dimethylacetylene ; Crotonylene ; But-2-yne ; Ch3cequivcch3 ; Butyne .