CAS 109-99-9 THF Tetrahydrofuran is a colorless organic liquid, which is miscible with water and has low viscosity at room temperature and pressure. The chemical formula of this cyclic ether is written as C4H8O. Because of its long liquid range, it is a common medium polar aprotic solvent.
Chemical Name: Tetrahydrofuran (THF)
CAS Number: 109-99-9
Molecular Formula: C₄H₈O
Molecular Weight: 72.11 g/mol
Appearance: Clear, colorless liquid
Odor: Ether-like, mild
Purity: ≥ 99.9% (anhydrous available)

Is THF Tetrahydrofuran a safe solvent?
No, THF is not considered a "safe" solvent and must be handled with significant caution.
THF Tetrahydrofuran is harmful in contact with skin and or swallowed. May form explosive peroxides Wear solvent resistant gloves (butyl rubber). Use a non-combustible material such as vermiculite, sand or earth to absorb the product and place it in a container for later disposal. Wear chemical goggles.
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