40 CFR § 417.100 - Applicability; description of the air—SO sulfation and sulfonation subcategory.
---identifier: "/us/cfr/t40/s417.100"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 417.100 - Applicability; description of the air—SO sulfation and sulfonation subcategory."title_number: 40title_name: "Protection of Environment"section_number: "417.100"section_name: "Applicability; description of the air—SO sulfation and sulfonation subcategory."chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"subchapter_number: "N"subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"part_number: "417"part_name: "SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY"positive_law: falsecurrency: "2026-04-05"last_updated: "2026-04-05"format_version: "1.1.0"generator: "[email protected]"authority: "Secs. 301, 304 (b) and (c), 306 (b) and (c), and 307(c) of the Federal Water Pollution Control Act as amended, (the Act); 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c) and 1317(c), 86 Stat. 816 Pub. L. 92-500."regulatory_source: "39 FR 13372, Apr. 12, 1974, unless otherwise noted."cfr_part: "417"---
Identifier
/us/cfr/t40/s417.100
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Environmental Protection Agency
Authority
Secs. 301, 304 (b) and (c), 306 (b) and (c), and 307(c) of the Federal Water Pollution Control Act as amended, (the Act); 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c) and 1317(c), 86 Stat.... Secs. 301, 304 (b) and (c), 306 (b) and (c), and 307(c) of the Federal Water Pollution Control Act as amended, (the Act); 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c) and 1317(c), 86 Stat. 816 Pub. L. 92-500.
# 417.100 Applicability; description of the air—SO sulfation and sulfonation subcategory.The provisions of this subpart are applicable to discharges resulting from the manufacture of sulfonic acids and sulfuric acid esters by means of sulfation and sulfonation employing air and sulfur trioxide (SO<sub>3</sub>), in either continuous or batch processes.