A suspension and a method of preparation are provided herein. The suspension comprises a continuous aqueous phase (a), a substance (b) that is capable of transport through the aqueous phase thereby resulting in Ostwald ripening of the substance, and a dispersing agent (c). The dispersing agent comprises the reaction product of at least one monomer (i) and at least one additional monomer (ii). The at least one monomer (ii) is represented by the general formula (1) wherein R is hydrogen, an alkyl group or an aryl group, R1 is an alkyl group having at least 2 carbon atoms, k is 2 to 4, and n is at least about 10. The at least one additional monomer (ii) has unsaturated functionality and contains at least one carbonyl group. The dispersing agent is present in the suspension in an amount sufficient to limit Ostwald ripening of the substance (b) in the suspension. R2C═CR—O—R1—(OCkH2k)n—OH  (I)