Melting point :-188 °C(lit.)
Boiling point :-42.1 °C(lit.)
Density :0.564 g/mL at 20 °C(lit.)
vapor density :1.5 (vs air)
vapor pressure :190 psi ( 37.7 °C)
refractive index :1.2861
Flash point :-104 °C
storage temp. :-20°C
pka :≈ 44 (Gordon and Ford, 1972)
form :liquid
explosive limit :9.5%
Odor Threshold :1500ppm
Water Solubility :62.61mg/L(25 ºC)
Merck :13,7891
BRN :1730718
Henry's Law Constant :0.706 at 25 °C (Hine and Mookerjee, 1975)
Exposure limits :TLV-TWA 1000 ppm (OSHA).
Dielectric constant :1.6（Ambient）
Stability :Stable. Incompatible with strong oxidizing agents. Highly flammable. May form explosive mixtures with air.
LogP :2.360
CAS DataBase Reference :74-98-6(CAS DataBase Reference)
EPA Substance Registry System :Propane (74-98-6)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.