Abstract: We investigated a possibility of the para-nitroaniline applying as a photopolymerization initiator. To carry out photopolymerization a system consisting of para-nitroaniline and N,N-Dipropylaniline was irradiated with UV light with a wavelength at 365 nm. When adding monomer in this system there was observed polymer formation. It is important to note that these results were not detected using either the nitro compound or the amine monomer as well as to the system without the monomer. The paper shows the kinetics of polymerization at low conversion with different ratios of amine and nitro compounds.