Abstract��
The stabilizer compounds composed of nonionic surfactants and pyrrole nucleus were added to 25% emulsifiable concentrate made from salithion of about 80% purity. The preparations were enclosed in ampoules and stored in a thermostat at 54��for 14 days and the contents of salithion were analyzed. When no stabilizer was used only 53. 44% of salithion remained and when the stabilizer was added at least 96. 29% salithion remained. However, when 25% E.C.of salithion was made from salithion of about 35% purity and the stabilizer,the contents of salithion remained were only 30% to 55% under the condition of the preservation test.