40 CFR § 721.100 - Applicability.

---
identifier: "/us/cfr/t40/s721.100"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 721.100 - Applicability."
title_number: 40
title_name: "Protection of Environment"
section_number: "721.100"
section_name: "Applicability."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "R"
subchapter_name: "TOXIC SUBSTANCES CONTROL ACT"
part_number: "721"
part_name: "SIGNIFICANT NEW USES OF CHEMICAL SUBSTANCES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 2604, 2607, and 2625(c)."
regulatory_source: "49 FR 35018, Sept. 5, 1984, unless otherwise noted."
cfr_part: "721"
---


# 721.100 Applicability.

This subpart C identifies certain additional recordkeeping requirements applicable to manufacturers and processors of substances identified in subpart E of this part for each specific substance. The provisions of this subpart C apply only when referenced in subpart E of this part for a substance and significant new use identified in that subpart E. If the provisions in this subpart C conflict with general provisions of subpart A of this part, the provisions of this subpart C shall apply.

[54 FR 31313, July 27, 1989, as amended at 87 FR 39769, July 5, 2022]