1.09799

p-Xylene

reference substance for gas chromatography

• Synonym(s): p-Xylene, 1,4-Dimethylbenzene
• Linear Formula: C₆H₄-1,4-(CH₃)₂
• CAS Number: 106-42-3
• Molecular Weight: 106.17
• MDL number: MFCD00008556
• UNSPSC Code: 12352005
• EC Index Number: 203-396-5

Properties

• vapor pressure: 8.7 hPa ( 20 °C)
• assay: ≥99.5% (GC)
• form: liquid
• autoignition temp.: 540 °C
• potency: 3910 mg/kg LD₅₀, oral (Rat)
• expl. lim.: 1.1-7 % (v/v)
• technique(s): gas chromatography (GC): suitable
• bp: 138.4 °C/1013 hPa
• mp: 13.3 °C
• transition temp: flash point 24 °C
• solubility: 0.2 g/L
• density: 0.86 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3
• InChI key: URLKBWYHVLBVBO-UHFFFAOYSA-N

Description

Analysis Note

Purity (GC): ≥ 99.5
Identity (IR-spectrum): conforms

Safety Information

• pictograms: GHS02,GHS07,GHS08
• 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: 80.6 °F - closed cup
• flash_point_c: 27 °C - closed cup