40 CFR 174.556 - SpCas9 protein; exemption from the requirement of a tolerance.

Regulations last checked for updates: Jan 09, 2026

Title 40 - Protection of Environment last revised: Dec 31, 2026

View all text of Subpart W [§ 174.500 - § 174.556]

§ 174.556 - SpCas9 protein; exemption from the requirement of a tolerance.

An exemption from the requirement of a tolerance for residues of SpCas9 protein in or on the food and feed commodities of Citrus when used as a Plant-Incorporated Protectant in accordance with label directions and good agricultural practices.

[90 FR 58170, Dec. 16, 2025]

authority: 7 U.S.C. 136-136y; 21 U.S.C. 321(q), 346a and 371

source: 66 FR 37814, July 19, 2001, unless otherwise noted.

cite as: 40 CFR 174.556