Melting point :-107 °C
Boiling point :98-99 °C(lit.)
Density :0.692 g/mL at 25 °C(lit.)
vapor density :3.9 (vs air)
vapor pressure :41 mm Hg ( 21 °C)
refractive index :n20/D 1.391(lit.)
Flash point :18 °F
storage temp. :Store at +5°C to +30°C.
solubility :water: insoluble
form :Liquid
pka :>14 (Schwarzenbach et al., 1993)
Specific Gravity :0.692 (20/4℃)
color :APHA: ≤10
Relative polarity :-0.4
Odor Threshold :0.11ppm
explosive limit :1%(V)
Water Solubility :INSOLUBLE
FreezingPoint :-107.52℃
λmax :λ: 205 nm Amax: 1.00
λ: 225 nm Amax: 0.10
λ: 254 nm Amax: 0.01 Merck :14,5193
BRN :1696876
Henry's Law Constant :3.23 at 25 °C (Mackay and Shiu, 1981)
Exposure limits :ACGIH TLV: TWA for all isomers 300 ppm (adopted).
Dielectric constant :2.1（Ambient）
Stability :Stable. Highly flammable. Incompatible with oxidizing agents, reducing agents.
LogP :4.373 (est)
CAS DataBase Reference :540-84-1(CAS DataBase Reference)
NIST Chemistry Reference :Pentane, 2,2,4-trimethyl-(540-84-1)
EPA Substance Registry System :2,2,4-Trimethylpentane (540-84-1)

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. P273 Avoid release to the environment. P302+P352 IF ON SKIN: wash with plenty of soap and water.