This final rule addresses the request of the Toxic Substances Control Act (TSCA) Interagency Testing Committee (ITC) in its 48\th\ Report, as modified in its 50\th\ and 51\st\ ITC Reports, by adding benzenamine, 3-chloro-2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)- to the TSCA section 8(a) Preliminary Assessment Information Reporting (PAIR) rule. It also addresses the request of the ITC in its 50\th\ Report by adding stannane, dimethylbis[(1-oxoneodecyl)oxy]-; benzene, 1,3,5-tribromo-2-(2-propenyloxy)-; and 1-triazene, 1,3-diphenyl- to the PAIR rule. Finally, it addresses the request of the ITC in its 51\st\ Report by adding 43 vanadium compounds to the PAIR rule. This PAIR rule will require manufacturers (including importers) of these 47 Chemical Abstract Service (CAS)-numbered chemicals added to the ITC's TSCA section 4(e) Priority Testing List to submit certain production, importation, use, and exposure-related information to EPA.