Phosphites

Phosphites
:   Functions as a secondary antioxidant
:   Decompose peroxides and hydroperoxides into non-radical and stable products
:   Used combination with a primary antioxidant
:   Effective as processing stabilizer
:   Phosphite are subjected to hydrolysis
   -   Black-specks from alcohols
   -   Corrosion
   -   Acids formed catalyze hydrolysis