SEDL / STP / STP1312-EB / STP11339S

Test Methods for Emulsifiable Concentrates

Becher, DZ
Senior Formulator, Ceregen, a Unit of Monsanto Company, St. Louis, MO

Pages: 6    Published: Jan 1996

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Abstract

Emulsifiable concentrates are one of the older forms of pesticide formulation. They basically consist of the pesticide active ingredient, carefully chosen surfactants, and if needed a solvent. The ingredients are chosen so that when the mixture is added to water an emulsion is formed spontaneously. A number of standard test methods have been developed for evaluating their properties. Both ASTM and CIPAC have issued standard test methods for a variety of emulsifiable concentrate properties. for example, both organizations have methods for the bloom or dispersion and stability of the resulting emulsion. Methods for a number of other properties which are not as specific to ECs also exist.