U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 174Subpart W - Subpart W—Tolerances and Tolerance Exemptions
§ 174.500 - Scope and purpose.
§ 174.501 - Bacillus thuringiensis Vip3Aa protein in corn and cotton; exemption from the requirement of a tolerance.
§ 174.502 - Bacillus thuringiensis Cry1A.105 protein; exemption from the requirement of a tolerance.
§ 174.504 - Bacillus thuringiensis Cry1F protein; exemption from the requirement of a tolerance.
§ 174.505 - Bacillus thuringiensis modified Cry3A protein (mCry3A) in corn; exemption from the requirement of a tolerance.
§ 174.506 - Bacillus thuringiensis Cry34Ab1 and Cry35Ab1 proteins in corn; exemption from the requirement of a tolerance.
§ 174.507 - Nucleic acids that are part of a plant-incorporated protectant; exemption from the requirement of a tolerance.
§ 174.508 - Pesticidal substance of a plant-incorporated protectant from a sexually compatible plant created through conventional breeding; exemption from the requirement of a tolerance.
§ 174.509 - Bacillus thuringiensis Cry3A protein; exemption from the requirement of a tolerance.
§ 174.510 - Bacillus thuringiensis Cry1Ac protein in all plants; exemption from the requirement of a tolerance.
§ 174.511 - Bacillus thuringiensis Cry1Ab protein in all plants; exemption from the requirement of a tolerance.
§ 174.512 - Coat Protein of Potato Virus Y; exemption from the requirement of a tolerance.
§ 174.513 - Potato Leaf Roll Virus Resistance Gene (also known as orf1/orf2 gene); exemption from the requirement of a tolerance.
§ 174.514 - Coat Protein of Watermelon Mosaic Virus-2 and Zucchini Yellow Mosaic Virus; exemption from the requirement for a tolerance.
§ 174.515 - Coat Protein of Papaya Ringspot Virus; exemption from the requirement of a tolerance.
§ 174.516 - Coat protein of cucumber mosaic virus; exemption from the requirement of a tolerance.
§ 174.517 - Bacillus thuringiensis Cry9C protein in corn; exemption from the requirement of a tolerance.
§ 174.518 - Bacillus thuringiensis Cry3Bb1 protein in corn; exemption from the requirement of a tolerance.
§ 174.519 - Bacillus thuringiensis Cry2Ab2 protein; exemption from the requirement of a tolerance.
§ 174.521 - Neomycin phosphotransferase II; exemption from the requirement of a tolerance.
§ 174.522 - Phosphinothricin Acetyltransferase (PAT); exemption from the requirement of a tolerance.
§ 174.523 - CP4 Enolpyruvylshikimate-3-phosphate (CP4 EPSPS) synthase in all plants; exemption from the requirement of a tolerance.
§ 174.524 - Glyphosate Oxidoreductase GOX or GOXv247 in all plants; exemption from the requirement of a tolerance.
§ 174.525 - E. coli B-D-glucuronidase enzyme as a plant-incorporated protectant inert ingredient; exemption from the requirement of a tolerance.
§ 174.526 - Hygromycin B phosphotransferase (APH4) marker protein in all plants; exemption from the requirement of a tolerance.
§ 174.527 - Phosphomannose isomerase in all plants; exemption from the requirement of a tolerance.
§ 174.529 - Bacillus thuringiensis modified Cry1Ab protein as identified under OECD Unique Identifier SYN-IR67B-1 in cotton; exemption from the requirement of a tolerance.
§ 174.530 - Bacillus thuringiensis Cry2Ae protein in cotton; exemption from the requirement of a tolerance.
§ 174.531 - Coat protein of plum pox virus; exemption from the requirement of a tolerance.
§ 174.532 - Bacillus thuringiensis eCry3.1Ab protein in corn; exemption from the requirement of a tolerance.
§ 174.533 - Glycine max Herbicide-Resistant Acetolactate Synthase (GM-HRA) inert ingredient; exemption from the requirement of a tolerance.
§ 174.534 - VNT1 protein; exemption from the requirement of a tolerance.
§ 174.535 - Spinach Defensin proteins; temporary exemption from the requirement of a tolerance.
§ 174.536 - Bacillus thuringiensis
§ 174.537 - HPPD-4 protein; exemption from the requirement of a tolerance.
§ 174.539 - Cry51Aa2.834__16 protein; exemption from the requirement of a tolerance.
§ 174.540 - Bacillus thuringiensis Cry14Ab-1 protein; exemption from the requirement of a tolerance.
§ 174.541 - Pesticidal substance of a plant-incorporated protectant created through genetic engineering from a sexually compatible plant; exemption from the requirement of a tolerance.
§ 174.542 - Bacillus thuringiensis Cry1Ab/Cry2Aj protein in corn; exemption from the requirement of a tolerance.
§ 174.543 - G10evo-EPSPS protein in all plants; exemption from the requirement of a tolerance.
§ 174.544 - Modified potato acetolactate synthase (StmALS) in potato; exemption from the requirement of a tolerance.
§ 174.545 - BLB2 and AMR3 proteins in potato; temporary exemption from the requirement of a tolerance.
§ 174.546 - Bacillus thuringensis Cry1B.868 and Cry1Da_7 proteins; exemption from the requirement of a tolerance.
§ 174.547 - Ophioglossum pendulum IPD079Ea protein; exemption from the requirement of a tolerance.
§ 174.548 - Pseudomonas chlororaphis IPD072Aa protein; exemption from the requirement of a tolerance.
§ 174.549 - Bacillus thuringiensis Cry1Da2 protein; exemption from the requirement of a tolerance.
§ 174.550 - Streptomyces sviceus DGT-28 EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) protein; exemption from the requirement of a tolerance.
§ 174.551 - Brevibacillus laterosporus Mpp75Aa1.1 protein; exemption from the requirement of a tolerance.
§ 174.552 - Bacillus thuringiensis Vpb4Da2 protein; exemption from the requirement of a tolerance.
§ 174.553 - Bacillus thuringiensis Cry1B.34 protein; exemption from the requirement of a tolerance.
§ 174.554 - Bacillus thuringiensis Cry1A.2 protein; exemption from the requirement of a tolerance.
§ 174.555 - Bacillus thuringiensis Cry1B.2 protein; exemption from the requirement of a tolerance.
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