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
[change | change source]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
[change | change source]It is made by reacting arsenic trioxide with hydrofluoric acid or by reacting excess arsenic with fluorine.
Uses
[change | change source]It is used to change nonmetal chlorides to fluorides.