Tetrahydrofuran is a solvent from the ROTIDRY® Sept – Dried Solvents in Septum Bottles category, with a molecular weight of 72.11 g/mol. It belongs to the Oxygen heterocycles substance group. In the workplace, it requires various safety measures such as no open flames, no smoking, safety goggles, and safety gloves. The recommended indicative occupational exposure limit value for the European Union is an 8-hour limit value of 150 mg/m3 (50 ppm) and a short-term limit value of 300 mg/m3 (100 ppm). This compound is highly flammable and may cause skin irritation.

• CAS Number: 109-99-9
• Molecular Formula: C4H8O
• Molecular Weight: 72.11
• Exact Mass: 72.057514874
• Boiling Point: 151 °F at 760 mmHg (NTP, 1992)
• Melting Point: -163.3 °F (NTP, 1992)
• Vapour Density: 2.5 (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]
• H315: Causes skin irritation [Warning Skin corrosion/irritation]