40 CFR § 180.297 - -1-Naphthyl phthalamic acid; tolerances for residues.
---
identifier: "/us/cfr/t40/s180.297"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.297 - -1-Naphthyl phthalamic acid; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.297"
section_name: "-1-Naphthyl phthalamic acid; tolerances for residues."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "180"
part_name: "TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321(q), 346a and 371."
regulatory_source: "36 FR 22540, Nov. 25, 1971, unless otherwise noted."
cfr_part: "180"
---
# 180.297 -1-Naphthyl phthalamic acid; tolerances for residues.
(a) *General.* Tolerances are established for residues of the herbicide *N*-1-naphthyl phthalamic acid from application of its sodium salt in or on the following raw agricultural commodities:
| Commodity | Parts per million |
| --- | --- |
| Cantaloupe | 0.1(N) |
| Cucumber | 0.1(N) |
| Muskmelon | 0.1(N) |
| Watermelon | 0.1(N) |
(b) *Section 18 emergency exemptions.* [Reserved]
(c) *Tolerances with regional registrations.* [Reserved]
(d) *Indirect or inadvertent residues.* [Reserved]
[45 FR 32306, May 16, 1980, as amended at 63 FR 57075, Oct. 26, 1998]