Arsenic trifluoride

Arsenic trifluoride, also known as arsenic(III) fluoride, is a chemical compound. Its chemical formula is AsF₃. It has arsenic and fluoride ions in it. The arsenic is in its +3 oxidation state.

Properties

Arsenic trifluoride is a colorless liquid. It melts at -8.5°C and boils at 60.4°C. It is highly toxic. It reacts with water to make arsenous acid and hydrofluoric acid, both very dangerous acids.

Preparation

It is made by reacting arsenic trioxide with hydrofluoric acid or by reacting excess arsenic with fluorine.

Uses

It is used to change nonmetal chlorides to fluorides.

Related pages

• Antimony trifluoride
• Bismuth trifluoride
• Arsenic trichloride
• Arsenide