CAS78-78-4
FormulaN/A
SynonymButane, 2-methyl-, Ethyldimethyl methane, Isoamylhydride, 2-Methylbutane, 1,1,2-Trimethylethane, Butane, 2-methyl-, 2-Methylbutane
Density0.625 (20 c)
Auto Ignition Temp370 C (DIN 51794)
Aniline point77 C
Pour point<-50 C
Kauri-Butanol Number29
Viscosity @ 25°C0.35 mm^2/s
Thermal Conductivity @ 20C0.11 W/m/C
Hydrogen Bonding Index0
Fractional Polarity0
Electrical Conductivity @ 20C<1 pS/m
Molecular weight71 g/mol
Antoine Constant A #7.17660 kPa, C
Refractive Index @ 20° C1.354
Relative Evaporation Rate (nBuAc=1)15
Colour+30 Saybolt
Distillation - Initial Boiling Point28 C
Antoine Constant B #1791.83 kPa, C
Vapour Pressure @ 0C36 kPa
Naphthenes<1 % m/m
n-Hexane<0.1 % m/m
Upper Explosion Limit in Air7.6 % v/v
Surface Tension @ 20C15 mN/m
Hildebrand Solubility Parameter6.8 (cal/cm^3)^1/2
Density @ 15 ° C0.624 kg/L
Coefficient of Cubic Expansion @ 20C16 10^-4/C
Bromine Index20 mg Br/100g
Distillation - Dry Point32 C
Relative Evaporation Rate (Ether=1)<1.0
Antoine Constant C #318.690 kPa, C
Temperature Limits for Antoine Equation-5 to +25 C
Vapour Pressure @ 20C77 kPa
Saturated Vapour Concentration @ 20C2275 g/m^3
Paraffins>99 % m/m
Aromatics<5 mg/kg
Benzene<3 mg/kg
Sulphur<0.5 mg/kg
Flash Point (Abel)<-50 C
Lower Explosion Limit in Air1.3 % v/v
Auto Ignition Temp468 C (ASTM E659)
Odorgasoline-like odor
Insolubilityin water
Vapor Pressure595 mm hg (21 c)
Colorcolorless volatile liquid
Flash Point-51 c
Solubilityhydrocarbons, alcohol, oils, ether
Boiling Point27.85 c
