40 CFR § 180.300 - Ethephon; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.300"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.300 - Ethephon; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.300"
section_name: "Ethephon; 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"
---


# 180.300 Ethephon; tolerances for residues.

(a) *General.* Tolerances are established for residues of the plant regulator ethephon [(2-chloroethyl) phosphonic acid] in or on food commodities as follows:

| Commodity | Parts per million |
| --- | --- |
| Apple | 5.0 |
| Apple, juice | 10.0 |
| Barley, bran | 5.0 |
| Barley, grain | 2.0 |
| Barley, straw | 10.0 |
| Blackberry | 30.0 |
| Blueberry | 20.0 |
| Cantaloupe | 2.0 |
| Cattle, fat | 0.02 |
| Cattle, kidney | 1.0 |
| Cattle, meat | 0.02 |
| Cattle, meat byproducts, except kidney | 0.2 |
| Cherry | 10.0 |
| Coffee, bean, green | 0.5 |
| Cotton, gin byproducts | 180.0 |
| Cotton, undelinted seed | 6.0 |
| Egg | 0.002 |
| Goat, fat | 0.02 |
| Goat, kidney | 1.0 |
| Goat, meat | 0.02 |
| Goat, meat byproducts, except kidney | 0.2 |
| Grape | 2.0 |
| Grape, raisin | 12.0 |
| Hazelnut | 0.80 |
| Hog, fat | 0.02 |
| Hog, kidney | 1.0 |
| Hog, meat | 0.02 |
| Hog, meat byproducts, except kidney | 0.2 |
| Horse, fat | 0.02 |
| Horse, kidney | 1.0 |
| Horse, meat | 0.02 |
| Horse, meat byproducts, except kidney | 0.2 |
| Milk | 0.01 |
| Nut, macadamia | 0.5 |
| Pepper | 30.0 |
| Pineapple | 2.0 |
| Poultry, fat | 0.02 |
| Poultry, liver | 0.05 |
| Poultry, meat | 0.01 |
| Poultry, meat byproducts, except liver | 0.01 |
| Sheep, fat | 0.02 |
| Sheep, kidney | 1.0 |
| Sheep, meat | 0.02 |
| Sheep, meat byproducts, except kidney | 0.2 |
| Sugarcane, molasses | 1.5 |
| Tomato | 2.0 |
| Walnut | 0.5 |
| Wheat, bran | 5.0 |
| Wheat, germ | 5.0 |
| Wheat, grain | 2.0 |
| Wheat, middlings | 5.0 |
| Wheat, shorts | 5.0 |
| Wheat, straw | 10.0 |

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

(c) *Tolerances with regional registrations.* A tolerance with regional registration, as defined in § 180.1(m), of 0.1 part per million is established for residues of the plant regulator ethephon [(2-chloroethyl)phosphonic acid] in or on the food commodity sugarcane.

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

[65 FR 33710, May 24, 2000, as amended at 72 FR 53455, Sept. 19, 2007; 75 FR 56015, Sept. 15, 2010; 80 FR 72598, Nov. 20, 2015]