The structure of tralkoxydim indicates that E/Z isomerism is possible about the C-N bond. In the solid state, tralkoxydim exists in a twisted enol form (E-isomer). In non-polar solvents it exists as two tautomeric forms in rapid equilibrium: a planar enol form and an aminoenone form, with the latter predominating. In polar solvents tralkoxydim equilibrates between the two tautomers and the Z-oxime isomer.