8.08697

o-Xylene

for synthesis

• Synonym(s): 1,2-Dimethylbenzene
• Linear Formula: C₆H₄(CH₃)₂
• CAS Number: 95-47-6
• Molecular Weight: 106.17
• UNSPSC Code: 12352005
• NACRES: NA.22
• EC Index Number: 202-422-2
• MDL number: MFCD00008519
• Beilstein/REAXYS Number: 1815558
• Assay: ≥98% (GC)
• Grade: synthesis grade
• Bp: 143-145 °C (lit.)
• Vapor pressure: <0.1 atm ( 21.1 °C), 16 mmHg ( 37.7 °C), 7 mmHg ( 20 °C)

Properties

• grade: synthesis grade
• Quality Level: 200
• vapor density: 3.7 (vs air)
• vapor pressure: <0.1 atm ( 21.1 °C), 16 mmHg ( 37.7 °C), 7 mmHg ( 20 °C)
• assay: ≥98% (GC)
• form: liquid
• autoignition temp.: 867 °F
• expl. lim.: 7 %
• dilution: (for synthesis)
• refractive index: n20/D 1.505 (lit.)
• bp: 143-145 °C (lit.)
• mp: -26--23 °C (lit.)
• transition temp: flash point 30 °C
• density: 0.879 g/mL at 20 °C (lit.)
• storage temp.: 2-30°C
• 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-Xyleneis an aromatic hydrocarbon composed of two methyl substituents attached to adjacent carbon atoms. It has extremely low solubility in water. It is used to produce plasticizers, dyes, and pigments. Petroleum cracking produces O-Xylenes, which are used to generate phthalic anhydride, a precursor to many products, drugs, and chemicals.

Application

O-Xylene is used:

• As an additive of dope solutions in the preparation of PES (polyethersulfone) hollow fiber membranes.
• To produce phthalic anhydride.[1]

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.878 - 0.881
Identity (IR): passes test

Safety Information

• signalword: Danger
• 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: WGK 2
• flash_point_f: 89.6 °F - closed cup
• flash_point_c: 32.0 °C - closed cup
• pictograms: GHS02,GHS08,GHS07
• hcodes: H226,H304,H312 + H332,H315,H319,H335,H412