---
kind: "section"
citation: "40 C.F.R. § 180.142"
title: "40"
number: "180.142"
heading: "2,4-D; tolerances for residues."
url: "https://uscodex.org/cfr/40/180.142"
---

# §180.142. 2,4-D; tolerances for residues.

- (a) **General.** Tolerances are established for residues of the herbicide, plant regulator, and fungicide 2,4-D, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring residues of 2,4-D (2,4-dichlorophenoxyacetic acid), both free and conjugated, determined as the acid, in or on the following commodities:
- (b) **Section 18 emergency exemptions.** [Reserved]
- (c) **Tolerances with regional registrations.** Tolerances with regional registration, as defined in [§ 180.1(l)](/cfr/40/180.1.md?p=l), are established for residues of the herbicide, plant regulator, and fungicide 2,4-D, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerance levels is to be determined by measuring residues of 2,4-D (2,4-dichlorophenoxyacetic acid), both free and conjugated, determined as the acid, in or on the follow commodities:
- (d) **Indirect or inadvertent residues.** Tolerances are established for indirect or inadvertent residues of the herbicide, plant regulator, and fungicide 2,4-D, including its metabolites and degradates, in or on the commodities in the table below. Compliance with the tolerances levels is to be determined by measuring residues of 2,4-D (2,4-dichlorophenoxyacetic acid), both free and conjugated, determined as the acid, in or on the following commodities:

## Notes

### Amendments

[72 FR 52017, Sept. 12, 2007, as amended at 73 FR 53737, Sept. 17, 2008; 74 FR 48411, Sept. 23, 2009; 76 FR 55817, Sept. 9, 2011; 80 FR 72597, Nov. 20, 2015; 82 FR 9529, Feb. 7, 2017; 85 FR 82943, Dec. 21, 2020]

### Authority

Authority: 21 U.S.C. 321(q), 346a and 371.

### Source

Source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.

### Amendments

[72 FR 52017, Sept. 12, 2007, as amended at 73 FR 53737, Sept. 17, 2008; 74 FR 48411, Sept. 23, 2009; 76 FR 55817, Sept. 9, 2011; 80 FR 72597, Nov. 20, 2015; 82 FR 9529, Feb. 7, 2017; 85 FR 82943, Dec. 21, 2020]