Synonyms: Phosphorousacid, butylidenebis[2-(1,1-dimethylethyl)-5-methyl-4,1-phenylene] tetratridecylester (9CI); Phosphorous acid, ditridecyl ester, diester with4,4'-butylidenebis[6-tert-butyl-m-cresol] (7CI,8CI);1,1-Di(2-methyl-4-ditridecylphosphito-5-tert-butylphenyl)butane;4,4'-Butylidenebis(3-methyl-6-tert-butylphenyl ditridecyl phosphite);4,4'-Butylidenebis(6-tert-butyl-3-methylphenyl ditridecyl phosphite); ADK Stab260; Mark 260; Mark P; Mark QL