Product Name: n-Butane
Synonyms: A-17;Bu-Gas;butane(liquefiedgas);butane(non-specificname);Butanen;Butani;butylhydride;Freon 600
CAS: 106-97-8
MF: C4H10
MW: 58.12
EINECS: 203-448-7
Product Categories: refrigerants;Organics;Gas Cylinders;Hydrocarbons (Low Boiling point);Synthetic Organic Chemistry;Chemical Synthesis;Compressed and Liquefied Gases;Synthetic Reagents
Mol File: 106-97-8.mol
n-Butane Structure
n-Butane Chemical Properties
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
Fp 45
form gas
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).
Stability: Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, strong acids, strong alkalies.
CAS DataBase Reference 106-97-8(CAS DataBase Reference)
EPA Substance Registry System Butane (106-97-8)
Safety Information
Hazard Codes F+,F,T
Risk Statements 12-46-45
Safety Statements 9-16-45-53
RIDADR UN 2037 2.1
WGK Germany -
RTECS EJ4200000
F 4.5-31
Hazard Note Extremely Flammable
HazardClass 2.1
Toxicity LC50 (inhalation) for mice 680 gm/m3/2-h, rats 658 gm/m3/4-h (quoted, RTECS, 1985).
China
