| Melting point |
-160 °C |
| Boiling point |
30 °C(lit.) |
| Density |
0.62 g/mL at 25 °C(lit.) |
| vapor density |
2.6 (vs air) |
| vapor pressure |
11.17 psi ( 20 °C) |
| refractive index |
n20/D 1.354(lit.) |
| Flash point |
−51 °C |
| storage temp. |
2-8°C |
| solubility |
0.048g/l |
| form |
Liquid |
| pka |
>14 (Schwarzenbach et al., 1993) |
| color |
Clear colorless |
| Odor |
gasoline-like odor |
| explosive limit |
1.3-7.6%(V) |
| Odor Threshold |
1.3ppm |
| Water Solubility |
Miscible with water, hydrocarbons, oils, alcohol and ether. |
| λmax |
λ: 192 nm Amax: 1.00
λ: 210 nm Amax: 0.30
λ: 220 nm Amax: 0.07
λ: 240-400 nm Amax: 0.01 |
| BRN |
1730723 |
| Henry's Law Constant |
(atm?m3/mol):
1.24 at 25 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits |
ACGIH TLV: TWA 600 ppm (adopted). |
| Dielectric constant |
1.8（20℃） |
| Stability |
Stable. Extremely flammable. Incompatible with strong oxidizing agents. Vapour-air mixtures explosive in certain proportions. Incompatible with rubber, various plastics. The vapour, being heavier than air, may roll over surfaces and collect in low points. Note low flash point. |
| Cosmetics Ingredients Functions |
PROPELLANT
SOLVENT
VISCOSITY CONTROLLING |
| InChI |
1S/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3 |
| InChIKey |
QWTDNUCVQCZILF-UHFFFAOYSA-N |
| SMILES |
CCC(C)C |
| LogP |
3.4 at 20℃ |
| CAS DataBase Reference |
78-78-4(CAS DataBase Reference) |
| NIST Chemistry Reference |
Butane, 2-methyl-(78-78-4) |
| EPA Substance Registry System |
2-Methylbutane (78-78-4) |
