95680

p-Xylene

analytical standard

• Synonym(s): 1,4-Dimethylbenzene
• Linear Formula: C₆H₄(CH₃)₂
• CAS Number: 106-42-3
• Molecular Weight: 106.17
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329770478
• EC Number: 203-396-5
• Beilstein/REAXYS Number: 1901563
• MDL number: MFCD00008556

Properties

• Product Name: p-Xylene, analytical standard
• InChI key: URLKBWYHVLBVBO-UHFFFAOYSA-N
• InChI: 1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3
• SMILES string: Cc1ccc(C)cc1
• grade: analytical standard
• vapor density: 3.7 (vs air)
• vapor pressure: 9 mmHg ( 20 °C)
• assay: ≥99.5% (GC)
• autoignition temp.: 984 °F
• shelf life: limited shelf life, expiry date on the label
• expl. lim.: 7 %
• technique(s): HPLC: suitable; gas chromatography (GC): suitable
• refractive index: n20/D 1.495 (lit.); n20/D 1.495
• bp: 138 °C (lit.)
• mp: 12-13 °C (lit.)
• density: 0.861 g/mL at 20 °C (lit.)
• application(s): environmental
• format: neat
• Quality Level: 100

Description

Application

p-Xylene may be used as an analytical reference standard for the quantification of the analyte in occupational environmental samples[1] and aqueous samples[2][3] using gas chromatography technique with different modes of detection.

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

General description

p-Xylene is an aromatic liquid [4], which is an isomeric form of xylene.[5] It can be produced via Diels-Alder reaction between 2,5-dimethylfuran and ethylene catalyzed by zeolite.[6]

p-Xylene is an aromatic liquid[7], which is an isomeric form of xylene.[8] It can be produced via Diels-Alder reaction between 2,5-dimethylfuran and ethylene catalyzed by zeolite.[9]

p-Xylene is an environmental pollutant belonging to the class of volatile organic compounds. It is emitted from a variety of sources including adhesives, degreasing agents, combustion products of wood and fuels, industrial paints, aerosols, etc.[10]

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

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: WGK 2
• flash_point_f: 80.6 °F - closed cup
• flash_point_c: 27 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter