40 CFR § 180.1083 - Dimethyl sulfoxide; exemption from the requirement of a tolerance.
---
identifier: "/us/cfr/t40/s180.1083"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.1083 - Dimethyl sulfoxide; exemption from the requirement of a tolerance."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.1083"
section_name: "Dimethyl sulfoxide; exemption from the requirement of a tolerance."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "180"
part_name: "TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321(q), 346a and 371."
regulatory_source: "36 FR 22540, Nov. 25, 1971, unless otherwise noted."
cfr_part: "180"
---
# 180.1083 Dimethyl sulfoxide; exemption from the requirement of a tolerance.
Dimethyl sulfoxide (DMSO) [CAS Registry Number 67-68-5] is exempted from the requirement of a tolerance when used as an inert solvent or cosolvent in formulations with the following pesticides when used in accordance with good agricultural practices in or on the following raw agricultural commodities:
(a) Carbaryl (1-naphthyl methyl-carbamate)
Pea, dry, seed
Pea, succulent
(b) *O*-*O*-Diethyl *O*-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate
Pea, dry, seed
Pea, succulent
[48 FR 54819, Dec. 7, 1983, as amended at 74 FR 26535, June 3, 2009]