Toluene is a reference substance for gas chromatography (GC), categorized under Reference Substances for GC within the broader categories of Chemicals, Natural & Reference Materials, Phytochemicals, and Reference substances HPLC/TLC/GC. Its CAS Number is 108-88-3. The molecular formula of toluene is C7H8 with a Molecular Weight of 92.14 g/mol. It belongs to the substance group Hydrocarbons, aromatic. In the workplace, it is labeled as Prohibition label, No open flame; fire, open ignition sources and smoking prohibited, No admittance for unauthorized persons, Warning label, Caution - inflammable material, Precept label, Use safety goggles, and Wear safety gloves. The recommended indicative occupational exposure limit value for the European Union is an 8-hour limit value of 192 mg/m3 (50 ppm) and

• CAS Number: 108-88-3
• Molecular Formula: C7H8
• Molecular Weight: 92.14
• Exact Mass: 92.062600255
• Boiling Point: 231.1 °F at 760 mmHg (NTP, 1992)
• Melting Point: -139 °F (NTP, 1992)
• Vapour Density: 3.14 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Danger
• Hazard Statements:
• H225: Highly Flammable liquid and vapor [Danger Flammable liquids]