Section 721.1500 - 1,2-Benzenediamine, 4-ethoxy, sulfate(a)Chemical substance and significant new use subject to reporting.(1) The following chemical substance referred to by its chemical name is subject to reporting under this section for the significant new use described in paragraph (a)(2) of this section: 1,2-benzenediamine, 4-ethoxy, sulfate, PMN P-83-105.(2) The significant new use is: Manufacture, import, or processing in powder or dry solid form.49 FR 43061, Oct. 26, 1984. Redesignated at 53 FR 2845, Feb. 2, 1988. Further redesignated at 58 FR 29946, May 24, 1993, as amended at 58 FR 34204, June 23, 1993 Sec. 5 , Pub. L. 94-469 , 90 Stat. 2012 (15 U.S.C. 2604 )