40 CFR § 174.506 - Cry34Ab1 and Cry35Ab1 proteins in corn; exemption from the requirement of a tolerance.

---
identifier: "/us/cfr/t40/s174.506"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 174.506 - Cry34Ab1 and Cry35Ab1 proteins in corn; exemption from the requirement of a tolerance."
title_number: 40
title_name: "Protection of Environment"
section_number: "174.506"
section_name: "Cry34Ab1 and Cry35Ab1 proteins in corn; 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"
---


# 174.506 Cry34Ab1 and Cry35Ab1 proteins in corn; exemption from the requirement of a tolerance.

Residues of *Bacillus thuringiensis* Cry34Ab1 and Cry35Ab1 proteins in corn are exempted from the requirement of a tolerance when used as plant-incorporated protectants in the food and feed commodities of corn; corn, field; corn, sweet; and corn, pop.

[72 FR 20434, Apr. 25, 2007]