40 CFR § 721.11966 - Metal, [heteropolycyclic]-, [[[(hydroxyalkyl)amino] sulfonyl]alkyl]sulfonyl(sulfoalkyl)sulfonyl derivs., ammonium sodium salts (generic).

---
identifier: "/us/cfr/t40/s721.11966"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 721.11966 - Metal, [heteropolycyclic]-, [[[(hydroxyalkyl)amino] sulfonyl]alkyl]sulfonyl(sulfoalkyl)sulfonyl derivs., ammonium sodium salts (generic)."
title_number: 40
title_name: "Protection of Environment"
section_number: "721.11966"
section_name: "Metal, [heteropolycyclic]-, [[[(hydroxyalkyl)amino] sulfonyl]alkyl]sulfonyl(sulfoalkyl)sulfonyl derivs., ammonium sodium salts (generic)."
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"
---


# 721.11966 Metal, [heteropolycyclic]-, [[[(hydroxyalkyl)amino] sulfonyl]alkyl]sulfonyl(sulfoalkyl)sulfonyl derivs., ammonium sodium salts (generic).

(a) *Chemical substance and significant new uses subject to reporting.* (1) The chemical substance identified generically as metal, [heteropoly

cyclic]-, [[[(hydroxyalkyl)amino] sulfonyl) alkyl]sulfonyl(sulfoalkyl) sulfonyl derivs., ammonium sodium salts (PMN P-21-168) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section.

(2) The significant new uses are:

(i) *Hazard communication.* Requirements as specified in § 721.72(a) through (f), (g)(3)(iii), and (g)(5). For purposes of § 721.72(e), the concentration is set at 1.0%. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System and OSHA Hazard Communication Standard may be used.

(ii) *Release to water.* Requirements as specified in § 721.90(a)(4), (b)(4), and (c)(4), where N=178.

(b) *Specific requirements.* The provisions of subpart A of this part apply to this section except as modified by this paragraph (b).

(1) *Recordkeeping.* Recordkeeping requirements as specified in § 721.125(a) through (c), (f) through (h), and (k) are applicable to manufacturers, importers, and processors of this substance.

(2) *Limitation or revocation of certain notification requirements.* The provisions of § 721.185 apply to this section.

[90 FR 26441, June 23, 2025]