- A phosphite is a salt of phosphorous acid. Phosphite is Highly Water Soluble, and when Applied to Plants is Quickly Absorbed by Leaves, Roots and Branches
- Once in Plants, it is extremely mobile, exhibiting "Symplastic ambimobility", meaning that it is uniquely able to move in both xylem and phloem
- Phosphites are extensively used as secondary antioxidants in manufacture of various polymers and synthetic rubbers to improve colour, processing, heat and UV stability.
- Use in plants :- Inorganic phosphites have been applied to crops to combat fungus-like pathogens of the order Oomycetes.
- Phosphites are primarily used as Process Stabilizers to prevent the decomposition of polymers during processing. Indirectly they help in long-term stability of the polymer and minimize the extent of degradation of the polymer during processing.