Composition containing natural pyrethrin and antioxidant

Abstract

The present invention pertains to a composition or the like containing a natural pyrethrin and an antioxidant selected from group P or group S.　Group P: A group comprising compounds represented by formula (1) [R1 and R2 are the same or different from each other and each represent a C9-C14 alkyl group], 3,9-bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, tris(nonylphenyl) phosphite, triphenyl phosphite, tetrakis(2,4-di-tert-butyl phenyl) 4,4'-biphenylene diphosphinite, tridodecyl trithiophosphite, etc. Group S: A group comprising pentaerythritol tetrakis[3-(dodecylthio)propionate], 2-mercaptobenzimidazole, 2,4-bis[(dodecylthio)methyl]-6-methylphenol, and didodecyl 3,3'-thiodipropionate.