40 CFR § 180.151 - Ethylene oxide; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.151"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.151 - Ethylene oxide; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.151"
section_name: "Ethylene oxide; 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"
---


# 180.151 Ethylene oxide; tolerances for residues.

(a) *General.* (1) Tolerances are established for residues of the antimicrobial agent and insecticide ethylene oxide, when used as a postharvest fumigant in or on the following food commodities:

| Commodity | Parts per million |
| --- | --- |
| Herb and spice, group 19, dried, except basil | 7 |
| Licorice, roots | 7 |
| Peppermint, tops, dried | 7 |
| Sesame, seed | 7 |
| Spearmint, tops, dried | 7 |
| Vegetable, dried | 7 |
| Walnut | 50 |

(2) Tolerances are established for residues of the ethylene oxide reaction product, 2-chloroethanol, commonly referred to as ethylene chlorohydrin, when ethylene oxide is used as a postharvest fumigant in or on food commodities as follows:

| Commodity | Parts per million |
| --- | --- |
| Herb and spice, group 19, dried, except basil | 940 |
| Licorice, roots | 940 |
| Peppermint, tops, dried | 940 |
| Sesame, seed | 940 |
| Spearmint, tops, dried | 940 |
| Vegetable, dried | 940 |

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

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

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

[65 FR 33695, May 24, 2000, as amended at 74 FR 46696, Sept. 11, 2009]