40 CFR § 180.284 - Zinc phosphide; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.284"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.284 - Zinc phosphide; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.284"
section_name: "Zinc phosphide; 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"
---


# 180.284 Zinc phosphide; tolerances for residues.

(a) *General.* Tolerances are established for residues of the phosphine resulting from the use of the rodenticide zinc phosphide in or on the raw agricultural commodities as follows:

| Commodity | Parts per million |
| --- | --- |
| Alfalfa, forage | 0.2 |
| Alfalfa, hay | 0.2 |
| Barley, grain | 0.05 |
| Barley, hay | 0.2 |
| Barley, straw | 0.2 |
| Bean, dry, seed | 0.05 |
| Beet, sugar, roots | 0.05 |
| Beet, sugar, tops | 0.2 |
| Grape | 0.01 |
| Grass, rangeland, forage | 0.1 |
| Grass, rangeland, hay | 0.1 |
| Potato | 0.05 |
| Sugarcane, cane | 0.01 |
| Timothy, hay | 0.5 |
| Timothy, forage | 0.5 |
| Wheat, forage | 0.05 |
| Wheat, grain | 0.05 |
| Wheat, hay | 0.05 |
| Wheat, straw | 0.05 |

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

(c) *Tolerances with regional registrations.* Tolerances with regional registration, as defined in § 180.1(l), are established for residues of phosphine resulting from the use of the rodenticide zinc phosphide in or on the following raw agricultural commodities as follows:

| Commodity | Parts per million |
| --- | --- |
| Artichoke, globe | 0.01 |
| Beet, sugar, roots | 0.04 |
| Beet, sugar, tops | 0.02 |

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

[63 FR 45182, Aug. 25, 1998, as amended at 63 FR 67799, Dec. 9, 1998; 64 FR 40772, July 28, 1999; 64 FR 61791, Nov. 15, 1999; 65 FR 8874, Feb. 23, 2000; 65 FR 49941, Aug. 16, 2000; 65 FR 62634, Oct. 19, 2000; 66 FR 64773, Dec. 14, 2001; 68 FR 2247, Jan. 16, 2003; 68 FR 56195, Sept. 30, 2003; 70 FR 7046, Feb. 10, 2005; 74 FR 46373, Sept. 9, 2009; 76 FR 34885, June 15, 2011]