---identifier: "/us/cfr/t40/s417.31"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 417.31 - Specialized definitions."title_number: 40title_name: "Protection of Environment"section_number: "417.31"section_name: "Specialized definitions."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: "2026-03-24"last_updated: "2026-03-24"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/s417.31
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
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.
# 417.31 Specialized definitions.For the purpose of this subpart:(a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.(b) The term *anhydrous product* shall mean the theoretical product that would result if all water were removed from the actual product.(c) The term *neat soap* shall mean the solution of completely saponified and purified soap containing about 20-30 percent water which is ready for final formulation into a finished product.