CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | May liquefy in cool or cold weather. Less dense than water. Insoluble in water but soluble in alcohol. Under prolonged exposure to fire or heat, the containers may rupture violently and rocket. |
|---|---|
| Color/Form | Colorless gas or very volatile liquid |
| Odor | Gasoline-like odor |
| Boiling Point | 9.5 °C |
| Melting Point | -16.37 °C |
| Flash Point | less than 19.4 °F |
| Solubility | In water, 33.2 mg/L at 25 °C |
| Density | 0.591 at 20 °C/4 °C |
| Vapor Density | 2.5 (Air = 1) |
| Vapor Pressure | 1290.0 [mmHg] |
| LogP | log Kow = 3.11 |
| Autoignition Temperature | 842 °F (450 °C) |
| Decomposition | When heated to decomposition it emits acrid smoke and irritating fumes. |
| Heat of Combustion | At 298 K: liquid = 3230 kJ/mol; gas = 3253 kJ/mol |
| Heat of Vaporization | 22.75 kJ/mol |
| Surface Tension | 12.05 mN/m(=dyn/cm) at 20 °C; 10.98 mN/m(=dyn/cm) at 30 °C |
| Odor Threshold | Odor Threshold Low: 400.0 [mmHg] Odor threshold from ACGIH |
| Refractive Index | Index of refraction: 1.3476 at 6 °C/D |
| Kovats Retention Index | 408.4 415.3 414 414 413 412 413 413 407.2 415 409 409 412 415 |
| Other Experimental Properties | MP: -19.8 °C. Density: 0.613 at 0 °C/0 °C (liq) |
| Chemical Classes | Solvents -> Aliphatics, Saturated (<C12) |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Gas Cylinder Compressed Gases GHS04  Environment GHS09 |
| GHS Hazard Statements |
H220:Flammable gases H280:Gases under pressure H411:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
COMPUTED DESCRIPTORS
| Molecular Weight | 72.15 g/mol |
|---|---|
| XLogP3 | 2.5 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 72.093900383 g/mol |
| Monoisotopic Mass | 72.093900383 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 15.5 |
| 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
May liquefy in cool or cold weather. Less dense than water. Insoluble in water but soluble in alcohol. Under prolonged exposure to fire or heat, the containers may rupture violently and rocket.