The use of an esteramide compound, alone or as a mixture of the following formula (I): R1OOC-A-CONR2R3  (I) is described, wherein: A is a covalent bond or a methylene group —CH2—, R1 is an optionally substituted hydrocarbon group having from 1 to 36 carbon atoms, R2 and R3, either identical or different, are groups selected from a hydrogen atom and optionally substituted hydrocarbon groups comprising from 1 to 36 carbon atoms, R2 and R3 may form together a ring having the nitrogen atom to which they are bound, said ring being, if need be, substituted and/or having an additional heteroatom and R2 and R3 not being simultaneously hydrogens. Also described, are applications for using the esteramide compound as a solvent, a co-solvent, a coalescence agent, a crystallization inhibitor, a plasticizer or an agent for increasing biological activity.