Melting point :-26--23 °C (lit.)
Boiling point :143-145 °C (lit.)
Density :0.879 g/mL at 20 °C (lit.)
vapor density :3.7 (vs air)
vapor pressure :<0.1 atm ( 21.1 °C)
refractive index :n20/D 1.505(lit.)
Flash point :90 °F
storage temp. :Store below +30°C.
solubility :water: partially soluble0.1705 g/L at 25°C
form :Solid or Crystalline Powder
pka :>15 (Christensen et al., 1975)
color :Yellow to beige
Odor :Benzene-like; characteristic aromatic.
explosive limit :1.0-7.6%(V)
Odor Threshold :0.38ppm
Water Solubility :Sparingly soluble in water. (0.2g/L)
λmax :λ: 288 nm Amax: 1.00
λ: 300 nm Amax: 0.40
λ: 325 nm Amax: 0.05
λ: 350-400 nm Amax: 0.01 Merck :14,10081
BRN :1815558
Henry's Law Constant :14.0 at 45.00 °C, 16.4 at 50.00 °C, 19.0 at 55.00 °C, 21.3 at 60.00 °C, 26.3 at 70.00 °C (static headspace-GC, Park et al., 2004)
Exposure limits :NIOSH REL: 100 ppm (435 mg/m³), STEL 150 ppm (655 mg/m³), IDLH 900 ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm, STEL 150 ppm (adopted).
Dielectric constant :2.5699999999999998
Stability :Stable. Incompatible with oxidizing agents. Flammable. Hygroscopic.
InChIKey :CTQNGGLPUBDAKN-UHFFFAOYSA-N
LogP :3.16 at 20℃
CAS DataBase Reference :95-47-6(CAS DataBase Reference)
NIST Chemistry Reference :Benzene, 1,2-dimethyl-(95-47-6)
EPA Substance Registry System :o-Xylene (95-47-6)

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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.