Sb. Singh et G. Kulshrestha, Identification of impurities in technical anilofos and their effect on transplanted rice, J AGR FOOD, 49(8), 2001, pp. 3728-3735
Seven impurities, namely, isopropylaniline (III), isopropylacetanilide (V),
isopropylchloroacetanilide (VII), oxoanalogue (VIII), dithiodimer (IX), mo
nothiodimer (X), and mercaptoacetanilide (XI), have been identified from te
chnical anilofos. The quantification of each impurity was carried out by co
mparison with authentic samples of known concentration by GC and HPLC. The
structure of authentic samples (synthesized and isolated) was established o
n the basis of NMR, IR, and MS spectral data. Bioassay of all the detected
impurities along with three possible contaminants was carried out on transp
lanted rice under laboratory conditions. The oxo compound (VIII) was found
to have an inhibitory effect on transplanted rice at 1 mug/g of soil.