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Physical Properties
Molecular weight:321.7; Composition:Tech. grade is ×93% pure. Partition coefficient(n-octanol and water):logP = 3.09 (25 °C, for flamprop, K. Chamberlain et al., Pestic. Sci., 47, 265 (1996)); pKa:3.7 (for flamprop, K. Chamberlain et al., Pestic. Sci., 47, 265 (1996) and refs. therein);
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Toxicology
ADI:( JMPR) 0.0002 mg/ kg b.w. [2000]; group ADI for fipronil and fipronil desulfinyl.
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Environmental Profile
Environmental fate:
Animals:In mammals, following oral administration of flamprop-M-methyl or flamprop-M-isopropyl, complete metabolism and excretion occurs within 4 days.Soil:The major soil degradate from both esters is flamprop free acid.Plant:In plants, flamprop-M-methyl and flamprop-M-isopropyl are hydrolysed to the biologically-active flamprop acid, which then undergoes conversion to a biologically-inactive conjugate.
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Transport Information
Hazard Class:III(Slightly hazardous)