Abstract: The present invention relates to a method of dispersing fine particles in an aqueous or polar solvent. The dispersant comprises a compound of general formula (I): In general formula (I), AO is an alkylene oxide group selected from ethylene oxide and propylene oxide, R1 is selected from a methyl group, an ethyl group, a propyl group, a butyl group, and a pentyl group, R2 is a carboxylic acid terminated group comprising 1 to 5 carbon atoms between the carboxylic acid and the polyalkylene glycol group (-(AO)n—O—), and n is 2 to 100. A dispersion of nanoparticles comprising the dispersant, use of the dispersant, and a method for dispersing nanoparticles is also disclosed.