CAS109-66-0
FormulaN/A
SynonymAlkane C5, Amyl hydride, Normal pentane, Pentane (INCI), Pentane, Pentane
Density0.62624
Dielectric Constant1.841
Auto/Self Ignition Temperaturetemp. 260 c
Surface Tension15.48 dynescm
Vapour Pressure @ 0C27 kPa
Density @ 15 ยฐ C0.631 kg/L
Refractive Index @ 20ยฐ C1.358
Distillation - Initial Boiling Point35 C
Relative Evaporation Rate (Ether=1)<1.0
Antoine Constant B #1438.75 kPa, C
Saturated Vapour Concentration @ 20C1728 g/m^3
Naphthenes<1 % m/m
Aromatics<5 mg/kg
Coefficient of Cubic Expansion @ 20C16 10^-2/C
Benzene<3 mg/kg
n-Hexane<0.1 % m/m
Auto Ignition Temp404 C (ASTM E659)
Bromine Index50 mg Br/100g
Kauri-Butanol Number29
Thermal Conductivity @ 20C0.12 W/m/C
Hildebrand Solubility Parameter7.0 (cal/cm^3)^1/2
Fractional Polarity0
Molecular weight72 g/mol
Colour+30 Saybolt
Distillation - Dry Point37 C
Relative Evaporation Rate (nBuAc=1)12
Antoine Constant C #280.050 kPa, C
Temperature Limits for Antoine Equation-5 to +25 C
Vapour Pressure @ 20C58 kPa
Sulphur<0.5 mg/kg
Flash Point (Abel)<-50 C
Lower Explosion Limit in Air1.4 % v/v
Upper Explosion Limit in Air7.8 % v/v
Auto Ignition Temp275 C (DIN 51794)
Aniline point71 C
Pour point<-50 C
Viscosity @ 25ยฐC0.35 mm^2/s
Surface Tension @ 20C16 mN/m
Hydrogen Bonding Index0
Antoine Constant A #6.56180 kPa, C
Paraffins>99 % m/m
Electrical Conductivity @ 20C<1 pS/m
Odorgasoline-like odor
Insolubilityin water
Vapor Pressure400 mm hg (18.5 c)
Colorcolorless liquid
Flash Point(cc) -49 c
Solubilityalcohol, oxygenated, chlorinated, and hydrocarbon solvs.
Boiling Point36 c