40 CFR § 180.463 - Quinclorac; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.463"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.463 - Quinclorac; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.463"
section_name: "Quinclorac; 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"
---


# 180.463 Quinclorac; tolerances for residues.

(a)(1) *General.* Tolerances are established for residues of the herbicide quinclorac, including its metabolites and degradates, in or on the commodities in the table in this paragraph. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only quinclorac, 3,7-dichloro-8-quinolinecarboxylic acid, in or on the commodity.

Table 1 to Paragraph (**a**)(1)

| Commodity | Parts per
million |
| --- | --- |
| Asparagus | 0.08 |
| Barley, grain | 2 |
| Berry, low growing, except strawberry, subgroup 13-07H | 1.5 |
| Bushberry subgroup 13-07B | 0.08 |
| Caneberry subgroup 13-07A | 0.08 |
| Cattle, fat | 0.7 |
| Cattle, meat | 0.05 |
| Cattle, meat byproducts | 1.5 |
| Egg | 0.05 |
| Goat, fat | 0.7 |
| Goat, meat | 0.05 |
| Goat, meat byproducts | 1.5 |
| Grain, aspirated fractions | 1200 |
| Grass, forage | 150 |
| Grass, hay | 130 |
| Hog, fat | 0.7 |
| Hog, fat | 0.05 |
| Hog, meat | 0.05 |
| Hog, meat byproducts | 1.5 |
| Hog, meat byproducts | 0.05 |
| Horse, fat | 0.7 |
| Horse, meat | 0.05 |
| Horse, meat byproducts | 1.5 |
| Milk | 0.05 |
| Poultry, fat | 0.05 |
| Poultry, meat | 0.05 |
| Poultry, meat byproducts | 0.1 |
| Poultry, meat byproducts | 0.05 |
| Rhubarb | 0.5 |
| Rice, bran | 30 |
| Rice, grain | 10 |
| Sheep, fat | 0.7 |
| Sheep, meat | 0.05 |
| Sheep, meat byproducts | 1.5 |
| Sorghum, grain, forage | 3 |
| Sorghum, grain, grain | 6 |
| Sorghum, grain, stover | 1 |
| Wheat, forage | 1 |
| Wheat, germ | 0.75 |
| Wheat, grain | 0.5 |
| Wheat, hay | 0.5 |
| Wheat, straw | 0.1 |
| There are no U.S. registrations. |  |
| This tolerance expires on August 26, 2026. |  |

(2) Tolerances are established for residues of the herbicide quinclorac, including its metabolites and degradates, in or on the commodity in the following table. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only quinclorac, 3,7-dichloro-8-quinolinecarboxylic acid, and its methyl ester, methyl-3,7-dichloro-8-quinolinecarboxylate, calculated as the stoichiometric equivalent of quinclorac, in or on the commodity.

Table 2 to Paragraph (**a**)(2)

| Commodity | Parts per million |
| --- | --- |
| Rapeseed, subgroup 20A | 1.5 |
| There are no U.S. Registrations. |  |

(b) [Reserved]

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

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

[57 FR 47996, Oct. 21, 1992, as amended at 64 FR 6548, 6549, Feb. 10, 1999; 64 FR 14632, Mar. 26, 1999; 65 FR 33701, May 24, 2000; 67 FR 35049, May 17, 2002; 72 FR 55073, Sept. 28, 2007; 74 FR 51490, Oct. 7, 2009; 74 FR 67090, Dec. 18, 2009; 76 FR 23497, Apr. 27, 2011; 77 FR 75566, Dec. 21, 2012; 78 FR 71528, Nov. 29, 2013; 80 FR 72599, Nov. 20, 2015; 82 FR 57149, Dec. 4, 2017; 85 FR 43702, July 20, 2020; 91 FR 9727, Feb. 27, 2026]