40 CFR § 180.155 - 1-Naphthaleneacetic acid; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.155"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.155 - 1-Naphthaleneacetic acid; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.155"
section_name: "1-Naphthaleneacetic 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"
---


# 180.155 1-Naphthaleneacetic acid; tolerances for residues.

(a) *General.* Tolerances are established for the residues of 1-naphthaleneacetic acid, including its metabolites and degradates in or on the commodities in the following table. Compliance with the tolerance levels specified is to be determined by measuring only 1-naphthaleneacetic acid and its conjugates, calculated as the Stoichiometric equivalent of 1-naphthaleneacetic acid, in or on the commodity.

| Commodity | Parts permillion |
| --- | --- |
| Avocado | 0.05 |
| Cherry, sweet | 0.1 |
| Fruit, pome, group 11-10 | 0.15 |
| Mango | 0.05 |
| Olive | 0.7 |
| Orange | 0.1 |
| Pineapple | 0.05 |
| Pomegranate | 0.05 |
| Potato | 0.01 |
| Rambutan | 2.0 |
| Sapote, mamey | 0.05 |
| Tangerine | 0.1 |
| There are no U.S. registrations since 1988. |  |

(b) *Section 18 emergency exemptions.* [Reserved]

(c) *Tolerances with regional registrations.* [Reserved]

(d) *Indirect or inadvertent residues.* [Reserved]

[78 FR 30218, May 22, 2013, as amended at 80 FR 77260, Dec. 14, 2015]