Guaiacol, with the molecular formula C7H8O2 and a Molecular Weight of 124.14 g/mol, is an aromatic building block classified under Phenols, substituted and Oxy compounds, ethers, substituted. It has a Melting Point of 82.4°F and boils between 399 to 403°F at standard pressure. Guaiacol is heavier than air and will sink. In the workplace, it is recommended to use safety goggles, wear safety gloves, and follow precept label instructions due to its potential harmfulness if swallowed and skin irritation properties. The GHS signal word for guaiacol is Warning.

• CAS Number: 90-05-1
• Molecular Formula: C7H8O2
• Molecular Weight: 124.14
• Exact Mass: 124.052429494
• Boiling Point: 399 to 403 °F at 760 mmHg (NTP, 1992)
• Melting Point: SOLIDIFIES at 82.4 °F (NTP, 1992)
• Vapour Density: 4.27 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Warning
• Hazard Statements:
• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]