{"data":{"id":"us/40-cfr-464.41","jurisdiction":"us","citation":"40 CFR 464.41","heading":"Specialized definitions.","body":"For the purpose of this subpart:\n(a) Total Toxic Organics (TTO). TTO is a regulated parameter under PSES (§ 464.45) and PSNS (§ 464.46) for the zinc subcategory and is comprised of a discrete list of toxic organic pollutants for each process segment where it is regulated, as follows:\n(1) Casting Quench (§§ 464.45(a) and 464.46(a)):\n21. 2,4,6-trichlorophenol\n22. para-chloro meta-cresol\n31. 2,4-dichlorophenol\n34. 2,4-dimethylphenol\n39. fluoranthene\n44. methylene chloride (dichloromethane)\n65. phenol\n66. bis(2-ethylhexyl) phthalate\n68. di-n-butyl phthalate\n70. diethyl phthalate\n85. tetrachloroethylene\n(2) Die Casting (§§ 465.45(b) and 464.46(b)):\n1. acenaphthene\n21. 2,4,6-trichlorophenol\n22. para-chloro meta-cresol\n24. 2-chlorophenol\n34. 2,4-dimethylphenol\n44. methylene chloride (dichloromethane)\n55. naphthalene\n65. phenol\n66. bis (2-ethylhexyl) phthalate\n68. di-n-butyl phthalate\n70. diethyl phthalate\n85. tetrachloroethylene\n86. toluene\n87. trichloroethylene\n(3) Melting Furnace Scrubber (§§ 464.45(c) and 464.46(c)):\n31. 2,4-dichlorophenol\n34. 2,4-dimethylphenol\n39. fluoranthene\n44. methylene chloride (dichloromethane)\n55. naphthalene\n65. phenol\n66. bis(2-ethylhexyl) phthalate\n68. di-n-butyl phthalate\n85. tetrachloroethylene\n86. toluene\n87. trichloroethylene\n(4) Mold Cooling (§§ 464.45(d) and 464.46(d)):\n21. 2,4,6-trichlorophenol\n22. para-chloro meta-cresol\n31. 2,4-dichlorophenol\n34. 2,4-dimethylphenol\n39. fluoranthene\n44. methylene chloride (dichloromethane)\n65. phenol\n66. bis(2-ethylhexyl) phthalate\n68. di-n-butyl phthalate\n70. diethyl phthalate\n85. tetrachloroethylene","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY","Subpart D—Zinc Casting Subcategory"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"527c17f3d5333a574d4128cd7552abd2fe9ab1d4736e5ce0d2265f5af904d7a0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-464.40","next":"us/40-cfr-464.42"},"notice":"GroundRules: Original legal text. Not legal advice."}