95682

p-Xylene

puriss. p.a., ≥99.0% (GC)

• 동의어(들): 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 코드: 12352005
• PubChem Substance ID: 329770480
• 분석: ≥99.0% (GC)
• bp: 138 °C (lit.)
• vapor pressure: 9 mmHg ( 20 °C)

속성

• vapor density: 3.7 (vs air)
• Quality Level: 200
• vapor pressure: 9 mmHg ( 20 °C)
• grade: puriss. p.a.
• 분석: ≥99.0% (GC)
• 양식: liquid
• autoignition temp.: 984 °F
• expl. lim.: 7 %
• 불순물: ≤0.5% o- and m-xylene (GC); ≤0.5% toluene (GC)
• 증발 잔류물: ≤0.002%
• refractive index: n20/D 1.495 (lit.); n20/D 1.495
• 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.)
• 양이온 미량물: 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: Cc1ccc(C)cc1
• InChI: 1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3
• InChI key: URLKBWYHVLBVBO-UHFFFAOYSA-N

설명

일반 설명

p-Xylene is an isomeric form of xylene. It undergoes Friedel-Crafts acylation reaction with various acids in the presence of zeolites (catalyst). It can be obtained from the mixtures of isomeric forms of xylene and ethylbenzene, isolated from the naptha fraction of petroleum. Also, it can be prepared from toluene by employing ZSM (Zeolite Socony Mobil)-5 catalysts. It is a raw material for the manufacture of PET (poly(ethylene terephthalate)) bottles. Sustainable synthesis of xylene from ethylene and dimethylfuran in the presence of zeolite catalysts has been reported.

애플리케이션

p-Xylene may be used in the synthesis of poly-p-xylene and terephthalic acid.

안전성 정보

• 픽토그램: GHS02,GHS08,GHS07
• 신호어: Danger
• 유해 및 위험 성명서: H226,H304,H312 + H332,H315,H319,H335,H412
• 예방조치 성명서: 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
• 표적 기관: 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