Melting point :-118 °C
Boiling point :64 °C(lit.)
Density :0.664 g/mL at 25 °C(lit.)
vapor density :2.97 (vs air)
vapor pressure :135 mm Hg ( 17 °C)
refractive index :n20/D 1.376(lit.)
Flash point :20 °F
storage temp. :Flammables area
solubility :In methanol, g/L: 389 at 5 °C, 450 at 10 °C, 530 at 15 °C, 650 at 20 °C, 910 at 25 °C. Miscible at higher temperatures (Kiser et al., 1961).
form :Liquid
color :Clear colorless
explosive limit :~7.7%
Odor Threshold :8.9ppm
Water Solubility :Soluble in water. 0.013 g/L at 20°C). Miscible in ether, acetone. Soluble in ethanol.
BRN :1730734
Henry's Law Constant :1.693 atm?m³/mol at 25 °C (Hine and Mookerjee, 1975)
Exposure limits :ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and 1,000 ppm, respectively (adopted).
Dielectric constant :1.8899999999999999
Stability :Stable. Highly flammable. Incompatible with strong oxidizing agents.
LogP :3.6 at 20℃ and pH7
CAS DataBase Reference :96-14-0(CAS DataBase Reference)
EPA Substance Registry System :3-Methylpentane (96-14-0)

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 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P 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. 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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P331 Do NOT induce vomiting.