CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | 1-butene is a colorless gas. (NTP, 1992) |
|---|---|
| Color/Form | Colorless gas |
| Odor | Slightly aromatic odor |
| Boiling Point | 21 °F at 760 mmHg (NTP, 1992) |
| Melting Point | -301.5 °F (NTP, 1992) |
| Flash Point | -110 °F (NTP, 1992) |
| Solubility | Insoluble (NTP, 1992) |
| Density | 0.6255 at 19.9 °F (NTP, 1992) - Less dense than water; will float |
| Vapor Density | 1.93 (NTP, 1992) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 3480 mmHg at 70 °F (NTP, 1992) |
| LogP | log Kow = 2.40 |
| Henry's Law Constant | Henry's Law constant = 0.233 atm-cu m/mol at 25 °C |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Autoignition Temperature | 723 °F (NTP, 1992) |
| Decomposition | When heated to decomposition it emits acrid smoke and fumes. |
| Heat of Combustion | -2719.1 kJ/mol at constant pressure and temp |
| Heat of Vaporization | 20.31 kJ/mol at 298.15 K |
| Surface Tension | 0.0121 dyn/cm at 298.15 K |
| Polymerization | The substance may polymerize. |
| Odor Threshold | 69 ppb |
| Refractive Index | Index of refraction: 1.3962 at 20 °C/D |
| Kovats Retention Index | 386 388 389.2 392 391 388.7 391 390 386 393 390 392 382 385 385 385 388 390 384 391 383 387 384.9 386 385 386 387 387 387 387 386 386 390 390 392 400 |
| Other Experimental Properties | A colorless liquified petroleum gas |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Gas Cylinder Compressed Gases GHS04 |
| GHS Hazard Statements |
H220:Flammable gases H280:Gases under pressure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P410+P403:Protect from sunlight. Store in a well-ventilated place. |
COMPUTED DESCRIPTORS
| Molecular Weight | 56.11 g/mol |
|---|---|
| XLogP3 | 2.4 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 1 |
| Exact Mass | 56.062600255 g/mol |
| Monoisotopic Mass | 56.062600255 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 4 |
| Formal Charge | 0 |
| Complexity | 14 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
1-butene is a colorless gas. (NTP, 1992)