Dibasic esters (CAS Reg. No. 95481-62-2) is exempted from the requirement of a tolerance for residues when used as an inert ingredient (solvent and/or anti-freeze) at 10% W/W or less in microencapsulated pesticide formulations with the active ingredient cyfluthrin.
Code of Federal Regulations
[73 FR 10398, Feb. 27, 2008]