... ,4-di -tert -butyl -phenyl )-phosphite C.A.S.NO.: 31570-04-4 ANTIOXIDANT SONOX 168Chemical name: Tris -(2,4-di -tert ... , insoluble in water.Specification:Uses:It is a kind of phosphite ester antioxidant. Good synergistic with antioxidant, for example, SONOX 1010, SONOX 1076 ...