CFR›Title 40›Chapter I›Part 422›Subpart A ContainsSection 422.10CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 Subpart A—Phosphorus Production Subcategory Sections 422.10 § 422.10 Applicability; description of the phosphorus production subcategory. Next B Subpart B—Phosphorus Consuming Subcategory