40 CFR § 174.529 - modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 in cotton; exemption from the requirement of a tolerance.
---
identifier: "/us/cfr/t40/s174.529"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 174.529 - modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 in cotton; exemption from the requirement of a tolerance."
title_number: 40
title_name: "Protection of Environment"
section_number: "174.529"
section_name: "modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 in cotton; 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"
---
# 174.529 modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 in cotton; exemption from the requirement of a tolerance.
Residues of *Bacillus thuringiensis* modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 are exempt from the requirement of a tolerance when used as a plant-incorporated protectant in cotton; cotton, undelinted seed; cotton, refined oil; cotton, meal; cotton, hay; cotton, hulls; cotton, forage; and cotton, gin byproducts.
[73 FR 40764, July 16, 2008]