# 721.11902 Poly[oxy(methyl-1,2-ethanediyl)], .alpha.-(3-aminopropyl)-.omega.-butoxy-.
(a) *Chemical substance and significant new uses subject to reporting.* (1) The chemical substance identified as poly[oxy(methyl-1,2-ethanediyl)], .alpha.-(3-aminopropyl)-.omega.-butoxy- (PMN P-21-33; CASRN 2304726-50-7) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section. The requirements of this section do not apply to quantities of the substance after they have been completely reacted or destroyed.
(2) The significant new uses are:
(i) *Protection in the workplace.* Requirements as specified in § 721.63(a)(1) and (3), and (c). When determining which persons are reasonably likely to be exposed as required for § 721.63(a)(1), engineering control measures (*e.g.,* enclosure or confinement of the operation, general and local ventilation) or administrative control measures (*e.g.,* workplace policies and procedures) shall be considered and implemented to prevent exposure, where feasible.
(ii) *Hazard communication.* Requirements as specified in § 721.72(a) through (d), (f), and (g)(1), (g)(3)(iii) and (g)(5). For purposes of § 721.72(g)(1), this substance may cause: acute toxicity; skin corrosion; serious eye damage; skin sensitization; specific target organ toxicity. Alternative hazard and warning statements that meet the criteria of the Globally Harmonized System and OSHA Hazard Communication Standard may be used.
(iii) *Industrial, commercial, and consumer activities.* Requirements as specified in § 721.80(o). It is a significant new use to process or use the substance in any manner in formulation containing the substance at greater than 4%.
(iv) *Release to water.* Requirements as specified in § 721.90(a)(4), (b)(4), and (c)(4), where N=110. Whenever the substance is released together with poly[oxy(methyl-1,2-ethanediyl)], .alpha.-(3-aminopropyl)-.omega.-(1-methylethoxy)- (PMN P-21-32; CASRN 2304726-48-3), N should be calculated using the combined number of kilograms of both substances released per site per day.
(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 (i), 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 35628, July 29, 2025]