Melting point :-45 °C
Boiling point :163-166 °C(lit.)
Density :0.864 g/mL at 25 °C(lit.)
vapor density :4.1 (vs air)
vapor pressure :14 mm Hg ( 55 °C)
refractive index :n20/D 1.499(lit.)
Flash point :112 °F
storage temp. :2-8°C
solubility :Miscible with alcohol, benzene, ether (Windholz et al., 1983), and trimethylbenzene isomers.
pka :>14 (Schwarzenbach et al., 1993)
form :Liquid
color :Clear colorless
Odor Threshold :0.17ppm
explosive limit :0.88-6.1%, 100°F
Water Solubility :2.9 g/L (20 ºC)
Merck :14,5907
BRN :906806
Henry's Law Constant :4.03, 4.60, 5.71, 6.73, and 9.63 at 10, 15, 20, 25, and 30 °C, respectively (EPICS, Ashworth et al.,1988)
Exposure limits :NIOSH REL: TWA 25 ppm (125 mg/m³); ACGIH TLV: TWA for mixed isomers 25 ppm (adopted).
Dielectric constant :3.4（Ambient）
Stability :Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey :AUHZEENZYGFFBQ-UHFFFAOYSA-N
LogP :3.42 at 20℃
CAS DataBase Reference :108-67-8(CAS DataBase Reference)
NIST Chemistry Reference :Benzene, 1,3,5-trimethyl-(108-67-8)
EPA Substance Registry System :1,3,5-Trimethylbenzene (108-67-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning 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 H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning 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. P331 Do NOT induce vomiting.