A composition for preventing the caking of solid fertilizers comprising: - a component (a) which comprises a mixture of one or more mono-esteramine, di-esteramine and/or tri-esteramine of formula,, and, respectively: wherein in formula II1, II2, and II3 R 1 is a linear or branched alkyl containing 5 to 23 carbon atoms and/or a linear alkenyl group containing 5 to 23 carbon atoms and from 1 to 3 double bonds, R 2 and R 3 each independently represent -H or-OH, L represents a -(OCH 2 CH 2) a -(OCHR 4 CH 2) b - group, wherein R 4 represents an alkyl group containing 1 to 4 carbon atoms, a represents a number within the range of 0 to 20, b represents a number within the range of 0 to 6, and the sum of a+b represents the average alkoxylation degree which corresponds to a number from 0 to 26, m, n, p each independently represent a number within the range from 1 to 4, and q represents a number with the range from 0 to 26; wherein the sum weight percentage of di-esteramine and tri-esteramine compounds ( and) is from 70 to 100% wt., based on the total weight of esterified species comprised in component (a); - a component (b) which comprises at least a solvent, wherein the solvent is selected from mineral oils, paraffins and waxes derived from petroleum, and vegetal or animal fats and oils, or mixtures thereof, and wherein component (b) content is 50% wt. or more, based on the total weight of the composition. - a component (a) which comprises a mixture of one or more mono-esteramine, di-esteramine and/or tri-esteramine of formula,, and, respectively: wherein in formula II1, II2, and II3 R 1 is a linear or branched alkyl containing 5 to 23 carbon atoms and/or a linear alkenyl group containing 5 to 23 carbon atoms and from 1 to 3 double bonds, R 2 and R 3 each independently represent -H or-OH, L represents a -(OCH 2 CH 2) a -(OCHR 4 CH 2) b - group, wherein R 4 represents an alkyl group containing 1 to 4 carbon atoms, a represents a number within the range of 0 to 20, b represents a number within the range of 0 to 6, and the sum of a+b represents the average alkoxylation degree which corresponds to a number from 0 to 26, m, n, p each independently represent a number within the range from 1 to 4, and q represents a number with the range from 0 to 26; wherein the sum weight percentage of di-esteramine and tri-esteramine compounds ( and) is from 70 to 100% wt., based on the total weight of esterified species comprised in component (a); R 1 is a linear or branched alkyl containing 5 to 23 carbon atoms and/or a linear alkenyl group containing 5 to 23 carbon atoms and from 1 to 3 double bonds, R 2 and R 3 each independently represent -H or-OH, L represents a -(OCH 2 CH 2) a -(OCHR 4 CH 2) b - group, wherein R 4 represents an alkyl group containing 1 to 4 carbon atoms, a represents a number within the range of 0 to 20, b represents a number within the range of 0 to 6, and the sum of a+b represents the average alkoxylation degree which corresponds to a number from 0 to 26, m, n, p each independently represent a number within the range from 1 to 4, and q represents a number with the range from 0 to 26; - a component (b) which comprises at least a solvent, wherein the solvent is selected from mineral oils, paraffins and waxes derived from petroleum, and vegetal or animal fats and oils, or mixtures thereof, and wherein component (b) content is 50% wt. or more, based on the total weight of the composition.