... 95%96%97%TC(technical)Fipronil 2.5%5%EC,2.5%5%20%25%50%SC,80%WDG,75 ... fipronil (BSI, pa E-ISO) IUPAC name (?-5-amino-1-(2,6-dichloro-a,a,a-trifluoro- ... tolyl)-4-trifluoromethylsulfinylpyrazole-3-carbonitrile Chemical Abstracts name 5-amino-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4 ... completely reversible. Toxicity class WHO (a.i.) II; EPA (formulation) IIUses:Broad-spectrum insecticide, toxic by contact ...