Therefore, the aim of this work was to compare experimental, reference (from the NIST database) and predicted RIs obtained for different SP for possible UDMH transformation products. The experimental RI and predicted RI were compared with those available in the literature. This approach is presented for the first time on the example of UDMH transformation identification. For this purpose, standards of substances were selected that are or are suspected to be UDMH transformation products or may be structurally similar to its transformation products. Standard SP for the analysis of UDMH transformation products were chosen for the experiment. Different types of SP ranging from non-polar (RTx-5MS) , mid-polar (DB-1701) to polar (HP-INNOWax) have been used for the analysis earlier. It is required to obtain experimental GC RI for these compounds at different SP and compare the obtained values with those available in the literature and predicted by machine learning methods. The obtained data will allow to enrich the databases, which will subsequently improve the accuracy of GC RI prediction. Also, the data obtained by us can be used to adjust the identification methods of unknown UDMH transformation products, which will allow to make a more precise assessment of UDMH and its transformation product impact on the environment.