This document announces the revocation of the Toxic Substances Control Act (TSCA) section 8(a) information gathering rule on anthraquinone (CAS number 84-65-1), issued in the Federal Register of June 4, 1987. Data, as developed under the first tier of testing of an associated TSCA section 4 test rule (40 CFR 799.500), did not meet the hazard triggers for the second tier of testing under that rule. Thus, the section 8(a) reporting requirement, which has served as a mechanism to gather production/import level information that provided the basis for a production/import level trigger for the second tier of testing, is no longer needed.