Difluorophosphoric acid is an
inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...
with the formula HPO
2F
2. It is a colorless liquid. The acid has limited applications, in part because it is thermally and hydrolytically unstable.
It is prepared by
hydrolysis
Hydrolysis (; ) is any chemical reaction in which a molecule of water breaks one or more chemical bonds. The term is used broadly for substitution reaction, substitution, elimination reaction, elimination, and solvation reactions in which water ...
of
phosphorus oxyfluoride
Phosphoryl fluoride (commonly called phosphorus oxyfluoride) is a compound with the chemical formula . It is a colorless gas that hydrolyzes rapidly.
Synthesis and reactions
Phosphorus oxyfluoride is prepared by partial hydrolysis of phosphorus p ...
:
:POF
3 + H
2O → HPO
2F
2 + HF
Further hydrolysis gives mono
fluorophosphoric acid
Fluorophosphoric acid is the inorganic compound with the formula H2PO3F. It is a colorless viscous liquid that solidified to a glass upon cooling.
Preparation
Fluorophosphoric acid is produced commercially by treating phosphorus pentoxide with ...
:
:HPO
2F
2 + H
2O → H
2PO
3F + HF
Complete hydrolysis gives
phosphoric acid
Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula . It is commonly encountered as an 85% aqueous solution, w ...
:
:H
2PO
3F + H
2O → H
3PO
4 + HF
The salts of difluorophosphoric acid are known as
difluorophosphates.
References
{{inorganic-compound-stub
Oxohalides
Phosphorus halides
Fluoro complexes