Hydrofluoric Acid carries a recognized safety classification for professional environments due to its toxic and corrosive nature. Its molecular formula is FH, with a molecular weight of 20.0064. It boils at 66.7 °C for a 70% solution, and freezes at -69.0 °C for the same concentration. The hazard signal word for this substance is Danger. It is an inorganic acid and fluorine compound, requiring stringent handling procedures and personal protective equipment. Exposure limits have been established by the European Union, with an 8-hour limit value of 1.5 mg/m³ (1.8 ppm) and a short-term limit value of 2.5 mg/m³ (3 ppm).

• CAS Number: 7664-39-3
• Molecular Weight: 20.0064
• Exact Mass: 20.006228194
• Boiling Point: 66.7 °C for 70% solution
• Melting Point: -69.0 °C for 70% solution
• GHS Signal Word: Danger
• Molecular Formula: FH
• Vapour Density: 1.86 at 77 °F for 70% solution
• Hazard Statements:
• H300: Fatal if swallowed [Danger Acute toxicity, oral]
• H280: Contains gas under pressure; may explode if heated [Warning Gases under pressure]
• H290: May be corrosive to metals [Warning Corrosive to Metals]
• H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]