Melting point :−119 °C(lit.)
Boiling point :91 °C(lit.)
Density :0.687 g/mL at 25 °C(lit.)
vapor pressure :2.13 psi ( 37.7 °C)
refractive index :n20/D 1.388(lit.)
Flash point :25 °F
solubility :Soluble in acetone, alcohol, benzene, chloroform, ligroin, and ether (Weast, 1986). Miscible with liquid aliphatic hydrocarbons.
form :clear liquid
color :Colorless to Almost colorless
Odor Threshold :0.84ppm
explosive limit :~7%
Water Solubility :2.64mg/L(25 ºC)
BRN :1718739
Henry's Law Constant :2.38 at 25 °C (Mackay and Shiu, 1981)
Dielectric constant :1.9299999999999999
LogP :4.118 (est)
CAS DataBase Reference :589-34-4(CAS DataBase Reference)
EPA Substance Registry System :3-Methylhexane (589-34-4)

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 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 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 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P273 Avoid release to the environment. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P331 Do NOT induce vomiting.