40 CFR § 174.536 - mCry51Aa2 protein in cotton; temporary exemption from the requirement of a tolerance.
---
identifier: "/us/cfr/t40/s174.536"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 174.536 - mCry51Aa2 protein in cotton; temporary exemption from the requirement of a tolerance."
title_number: 40
title_name: "Protection of Environment"
section_number: "174.536"
section_name: "mCry51Aa2 protein in cotton; temporary exemption from the requirement of a tolerance."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "174"
part_name: "PROCEDURES AND REQUIREMENTS FOR PLANT-INCORPORATED PROTECTANTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "7 U.S.C. 136-136y; 21 U.S.C. 321(q), 346a and 371."
regulatory_source: "66 FR 37814, July 19, 2001, unless otherwise noted."
cfr_part: "174"
---
# 174.536 mCry51Aa2 protein in cotton; temporary exemption from the requirement of a tolerance.
Residues of the protein mCry51Aa2 in or on the food and feed commodities of cotton: Cotton, undelinted seed; cotton, gin byproducts; cotton, forage; cotton, hay; cotton, hulls; cotton, meal; and cotton, refined oil are temporarily exempt from the requirement of a tolerance when used as a plant-incorporated protectant in cotton plants in accordance with the terms of Experimental Use Permit No. 524-EUP-108. This temporary exemption from the requirement of a tolerance expires on February 28, 2019.
[82 FR 18230, Apr. 18, 2017]