| Melting point: |
−116 °C(lit.) |
| Boiling point: |
98 °C(lit.) |
| Density |
0.842 g/mL at 25 °C(lit.) |
| vapor density |
3.1 (vs air) |
| vapor pressure |
83 mm Hg ( 37.7 °C) |
| FEMA |
3478 | 1-BUTANETHIOL |
| refractive index |
n20/D 1.443(lit.) |
| Flash point: |
55 °F |
| storage temp. |
Store below +30°C. |
| solubility |
Slightly soluble in water, soluble in alcohol and oils. |
| pka |
11.51 at 25 °C (23.0% aqueous tert-butyl alcohol, Friedman et al., 1965) |
| form |
Liquid |
| color |
Colorless |
| Specific Gravity |
0.842 |
| Odor |
Strong skunk-like. |
| explosive limit |
1.4-11.3%(V) |
| Odor Threshold |
0.0000028ppm |
| Odor Type |
sulfurous |
| Water Solubility |
0.60 g/100 mL. Slightly soluble |
| Sensitive |
Air Sensitive |
| Merck |
14,1577 |
| JECFA Number |
511 |
| BRN |
1730908 |
| Henry's Law Constant |
(x 10-3 atm?m3/mol):
7.04 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits |
NIOSH REL: 15-min ceiling 0.5 ppm (1.8 mg/m3), IDLH 500 ppm; OSHA
PEL: TWA 10 ppm (35 mg/m3); ACGIH TLV: TWA 0.5 ppm (adopted). |
| Dielectric constant |
4.9500000000000002 |
| Stability: |
Stable. Incompatible with oxidizing agents, bases, alkali metals. Highly flammable. May discolour on exposure to air. |
| LogP |
2.28 |
| CAS DataBase Reference |
109-79-5(CAS DataBase Reference) |
| NIST Chemistry Reference |
1-Butanethiol(109-79-5) |
| EPA Substance Registry System |
Butyl mercaptan (109-79-5) |