40 CFR § 180.243 - Propazine; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.243"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.243 - Propazine; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.243"
section_name: "Propazine; 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"
---


# 180.243 Propazine; tolerances for residues.

(a) *General.* Tolerances are established for residues of the herbicide propazine, 2-chloro-4,6-bis(isopropylamino)-*s*-triazine, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only the sum of propazine, 2-chloro-4,6-bis(isopropylamino)-*s*-triazine, and its two chlorinated degradates, 2-amino-4-chloro-6-isopropylamino-*s*-triazine and 2,4-diamino-6-chloro-*s*-triazine, calculated as the stoichiometric equivalent of propazine, in or on the commodity.

| Commodity | Parts per million |
| --- | --- |
| Sorghum, grain, forage | 0.25 |
| Sorghum, grain, grain | 0.25 |
| Sorghum, grain, stover | 0.25 |

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

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

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

[75 FR 60242, Sept. 29, 2010]