Topic summary
Phosphites
Extracted from the Wikipedia article Phosphite (ion).
Salts containing H2P2O5, called diphosphites or pyrophosphites
Pyrophosphites (diphosphites) can be produced by gently heating acid phosphites under reduced pressure. They contain the ion H
2P
2O
5, which can be formulated [HP(O)2O−P(O)2H].