Phosphorous Acid

Phosphorous Acid is the compound described by the formula H3PO3.  This acid is diprotic, not triprotic as might be suggested by this formula. Phosphorous Acid is an intermediate in the preparation of other phosphorus compounds.

Phosphorous Acid is mainly used for the production of phosphonates which are used in water treatment. It is also used in chemical reactions as a reducing agent. 


We are pleased to offer Phosphorous Acid in the following quantities:

  • 55 Gallon Drum
  • IBC Tote
  • Bulk Tank Truck