317195

p-Xylene

suitable for HPLC, ≥99%

• Synonym(s): 1,4-Dimethylbenzene
• Linear Formula: C₆H₄(CH₃)₂
• CAS Number: 106-42-3
• Molecular Weight: 106.17
• Beilstein: 1901563
• EC Number: 203-396-5
• MDL number: MFCD00008556
• UNSPSC Code: 12190000
• PubChem Substance ID: 329753901
• NACRES: NA.21

Properties

• vapor density: 3.7 (vs air)
• vapor pressure: 9 mmHg ( 20 °C)
• Assay: ≥99%
• form: liquid
• autoignition temp.: 984 °F
• expl. lim.: 7 %
• technique(s): HPLC: suitable
• impurities: <0.030% water
• evapn. residue: <0.0005%
• refractive index: n20/D 1.495 (lit.)
• bp: 138 °C (lit.)
• mp: 12-13 °C (lit.)
• solubility: water: soluble 0.2 g/L
• density: 0.861 g/mL at 20 °C (lit.)
• λ: H₂O reference
• UV absorption: λ: 294 nm A_max: 1.00; λ: 320 nm A_max: 0.10; λ: 350 nm A_max: 0.05; λ: 380-400 nm A_max: 0.01
• application(s): food and beverages
• SMILES string: Cc1ccc(C)cc1
• InChI: 1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3
• InChI key: URLKBWYHVLBVBO-UHFFFAOYSA-N

Description

Application

• Measurements of relative distribution constants of vaporized hydrocarbons between air and polydimethylsiloxane via capillary columns for the calculation of headspace hydrocarbon compositions.: This research demonstrates the use of p-Xylene in gas chromatography to measure the distribution constants of hydrocarbons, crucial for accurate environmental and chemical analysis (Kim & Yu, 2020).


• Mutagenic atmospheres resulting from the photooxidation of aromatic hydrocarbon and NO(x) mixtures.: This article explores the mutagenic potential of atmospheric p-Xylene under photooxidation conditions, providing insights into air quality and health-related impacts (Riedel et al., 2018).

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Safety Information

• Pictograms: GHS02,GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H226,H304,H312 + H332,H315,H319,H335,H412
• Precautionary Statements: 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 Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 80.6 °F - closed cup
• Flash Point(C): 27 °C - closed cup