95662

o-Xylene

puriss. p.a., ≥99.0% (GC)

• Synonym(s): 1,2-Dimethylbenzene
• Linear Formula: C₆H₄(CH₃)₂
• CAS Number: 95-47-6
• Molecular Weight: 106.17
• Beilstein/REAXYS Number: 1815558
• EC Number: 202-422-2
• MDL number: MFCD00008519
• UNSPSC Code: 12352005
• PubChem Substance ID: 329770474
• NACRES: NA.21
• assay: ≥99.0% (GC)
• bp: 143-145 °C (lit.)
• vapor pressure: <0.1 atm ( 21.1 °C); 16 mmHg ( 37.7 °C); 7 mmHg ( 20 °C)

Properties

• vapor density: 3.7 (vs air)
• Quality Level: 200
• vapor pressure: <0.1 atm ( 21.1 °C); 16 mmHg ( 37.7 °C); 7 mmHg ( 20 °C)
• grade: puriss. p.a.
• assay: ≥99.0% (GC)
• form: liquid
• autoignition temp.: 867 °F
• expl. lim.: 7 %
• impurities: ≤0.4% toluene (GC); ≤0.6% m- and p-xylene (GC)
• evapn. residue: ≤0.002%
• refractive index: n20/D 1.505 (lit.); n20/D 1.505
• bp: 143-145 °C (lit.)
• mp: -26--23 °C (lit.)
• solubility: water: partially soluble 0.1705 g/L at 25 °C
• density: 0.879 g/mL at 20 °C (lit.)
• cation traces: Al: ≤0.5 mg/kg; Ba: ≤0.1 mg/kg; Bi: ≤0.1 mg/kg; Ca: ≤0.5 mg/kg; Cd: ≤0.05 mg/kg; Co: ≤0.02 mg/kg; Cr: ≤0.02 mg/kg; Cu: ≤0.02 mg/kg; Fe: ≤0.1 mg/kg; K: ≤0.5 mg/kg; Li: ≤0.1 mg/kg; Mg: ≤0.1 mg/kg; Mn: ≤0.02 mg/kg; Mo: ≤0.1 mg/kg; Na: ≤0.5 mg/kg; Ni: ≤0.02 mg/kg; Pb: ≤0.1 mg/kg; Sr: ≤0.1 mg/kg; Zn: ≤0.1 mg/kg
• SMILES string: Cc1ccccc1C
• InChI: 1S/C8H10/c1-7-5-3-4-6-8(7)2/h3-6H,1-2H3
• InChI key: CTQNGGLPUBDAKN-UHFFFAOYSA-N

Description

General description

o-Xylene is an isomeric form of xylene. Experimental values of density (ρ) and speed of sound (u) of its binary mixtures with diethyl carbonate (DEC) have been evaluated over the temperature range of 298.15-323.15K and at 0.1MPa atmospheric pressure. Its oxidation in the presence of three-dimensionally ordered mesoporous Co₃O₄ (meso-Co₃O₄) supported gold (xAu/meso-Co₃O₄, x = 3.7-9.0wt%) nanocatalysts has been reported.

Application

o-Xylene may be used in the synthesis of phthalic anhydride and phthalodinitrile.

Safety Information

• pictograms: GHS02,GHS08,GHS07
• signalword: Danger
• hcodes: H226,H304,H312 + H332,H315,H319,H335,H412
• pcodes: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P331
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 2
• flash_point_f: 89.6 °F - closed cup
• flash_point_c: 32.0 °C - closed cup