n-Butane

Melting point::

−138 °C(lit.)

Boiling point::

−0.5 °C(lit.)

Density :

0.579 g/mL at 20 °C(lit.)

vapor density :

2.11 (vs air)

vapor pressure :

3.21, 1.26, and 0.66 mM at 4, 25, and 50 °C, respectively (Kresheck et al., 1965)

refractive index :

1.3326

Flash point::

45

form :

gas

Odor:

faint disagreeable odor

Odor Threshold:

1200ppm

Water Solubility :

73.24mg/L(25 ºC)

Merck :

1515

BRN :

969129

Henry's Law Constant:

(atm?m³/mol): 0.356 at 5 °C, 0.454 at 10 °C, 0.568 at 15 °C, 0.695 at 20 °C, 0.835 at 25 °C (Ben-Naim et al., 1973)

Exposure limits:

TLV-TWA 800 ppm (～1920 mg/m³) (ACGIH), 500 ppm (1200 mg/m³) (MSHA).

Dielectric constant:

1.4（-1℃）

Stability::

Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, strong acids, strong alkalies.

Symbol(GHS) 

GHS02,GHS04

Signal word 

Danger

Hazard statements 

H220-H280

Precautionary statements 

P410+P403