A cryochemical synthesis of silver nanoparticles stablised by poly(2-dimethylaminoethyl methacrylate) has been performed. It has been shown that precursors which do not possess optical properties of colloidal silver are present in the freshly prepared organodispersion of silver in 2-(dimethylamino)ethyl methacrylate (DMAEMA) on the early stages of nanoparticle growth. Sols prepared with cryochemically synthesised silver nanoparticles in water, acetone, and toluene were found to be sterically stabilised by macromolecular poly-DMAEMA layers formed at the surface of the nanoparticles. Dynamic light scattering data show that the thickness of these layers depends on the nature of the solvent.