Melting point :-130 °C
Boiling point :36 °C
Density :0.626 g/mL at 25 °C(lit.)
vapor density :2.48 (vs air)
vapor pressure :26.98 psi ( 55 °C)
refractive index :n20/D 1.358
Flash point :−57 °F
storage temp. :Store at +5°C to +30°C.
solubility :ethanol: soluble(lit.)
form :Liquid
pka :>14 (Schwarzenbach et al., 1993)
Specific Gravity :0.63
color :Colorless
Relative polarity :0.009
Odor :Like a gasoline.
Odor Threshold :1.4ppm
explosive limit :1.4-8%(V)
Water Solubility :insoluble
λmax :λ: 200 nm Amax: ≤0.70
λ: 210 nm Amax: ≤0.20
λ: 220 nm Amax: ≤0.07
λ: 230 nm Amax: ≤0.02
λ: 250 nm Amax: ≤0.004 Merck :14,7116
BRN :969132
Henry's Law Constant :1.20 at 25 °C (J?nsson et al., 1982)
Exposure limits :TLV-TWA 600 ppm (～1800 mg/m³) (ACGIH), 1000 ppm (～3000 mg/m³) (OSHA), 500 ppm (～1500 mg/m³) (MSHA); STEL 750 ppm (～2250 mg/m³) (ACGIH).
Dielectric constant :1.8（20℃）
InChIKey :OFBQJSOFQDEBGM-UHFFFAOYSA-N
LogP :3.390
Surface tension :15.93mN/m at 293.15K
CAS DataBase Reference :109-66-0(CAS DataBase Reference)
NIST Chemistry Reference :Pentane(109-66-0)
EPA Substance Registry System :Pentane (109-66-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501 H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273 Avoid release to the environment.