MT 137 - Identification of urea herbicides

 

Content Handbook F

 

Outline of method

The urea herbicides present in both technical materials and dispersible powders are distinguished and identified by reverse phase TLC separation of the active ingredient, using paraffin impregnated silica gel plates and developing with ethanol + water. Alternatively, or for confirmation of identity, the separation may be performed on silica gel plates with chloroform + acetone or chloroform + ethyl acetate as developing solvents.