40 CFR §721.1660

1. (a)Chemical substances and significant new uses subject to reporting.
   1. (1)The benzidine-based chemical substances listed in Table 1 and Table 2 of this section are subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section.
   2. (2)The significant new uses are:
      1. (i)For each of the chemical substances listed in Table 2 of this section, any use other than use as a reagent to test for hydrogen peroxide in milk; a reagent to test for hydrogen sulfate, hydrogen cyanide, and nicotine; a stain in microscopy; a reagent for detecting blood; an analytical standard; and, additionally for Colour Index (C.I.) Direct Red 28 (Congo Red) (CAS No. 573-58-0), an indicator dye.
      2. (ii)For the chemical substances listed in Table 1 of this section: Any use.
2. (b)Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph (b).
   1. (1)Revocation of certain notification exemptions. The provisions of § 721.45(f) do not apply to this section. A person who imports or processes a chemical substance identified in paragraph (a)(1) of this section as part of an article for a significant new use described in paragraph (a)(2) of this section is not exempt from submitting a significant new use notice.
   2. (2)[Reserved]