This final rule, issued pursuant to section 8(d) of the Toxic Substances Control Act (TSCA) and its regulations, requires manufacturers (including importers) of the following 15 chemicals to report certain unpublished health and safety data to EPA: 3H-1,2,4- triazole-3-thione, 5-amino-1,2-dihydro-; imidazo[4,5-d]imidazole- 2,5(1H,3H)-dione, tetrahydro-; stannane, dimethylbis[(1- oxoneodecyl)oxy]-; benzene, 1,3,5-tribromo-2-(2-propenyloxy)-; 1- triazene,1,3-diphenyl-; benzenamine, 3-chloro-2,6-dinitro-N,N-dipropyl- 4-(trifluoromethyl)-; and 9 indium compounds. The Interagency Testing Committee (ITC), established under section 4(e) of TSCA to recommend chemicals and chemical mixtures to EPA for priority testing consideration, amends the TSCA section 4(e) Priority Testing List through periodic reports submitted to EPA. The ITC added the 15 chemicals in this rule to the Priority Testing List. In addition, in order to display the approval of the information collection requirements contained in this final rule as required by the Paperwork Reduction Act (PRA), EPA is amending the table of PRA approval numbers that appear in 40 CFR part 9.