CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 414—ORGANIC CHEMICALS, PLASTICS, AND SYNTHETIC FIBERS > SUBPART B—Rayon Fibers (§414.20 to §414.26) > 414.20—Applicability; description of the rayon fibers subcategory.