40 CFR § 721.10226 - Di-n-pentyl phthalate (DnPP).

---
identifier: "/us/cfr/t40/s721.10226"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 721.10226 - Di-n-pentyl phthalate (DnPP)."
title_number: 40
title_name: "Protection of Environment"
section_number: "721.10226"
section_name: "Di-n-pentyl phthalate (DnPP)."
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"
---


# 721.10226 Di-n-pentyl phthalate (DnPP).

(a) *Chemical substance and significant new uses subject to reporting.* (1) The chemical substance identified as di-*n*-pentyl phthalate (DnPP) (1,2-benzenedicarboxylic acid, 1,2-dipentyl ester) (CAS No. 131-18-0) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section.

(2) The significant new use is: Any use other than use as a chemical standard for analytical experiments.

(b) [Reserved]

[79 FR 77911, Dec. 29, 2014]