--- kind: "unit" title: "40" title_heading: "Protection of Environment" key: "chI/subchN/part415" level: "part" label: "Part 415" heading: "Inorganic Chemicals Manufacturing Point Source Category" release: "ecfr-current" date: "2026-08-27" url: "https://uscodex.org/cfr/40/chI-subchN-part415" sections_count: 287 --- # Part 415 — Inorganic Chemicals Manufacturing Point Source Category Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter N — Effluent Guidelines and Standards ## Contents - [Subpart A — Aluminum Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartA.md) - [Subpart B — Aluminum Sulfate Production Subcategory](/cfr/40/chI-subchN-part415-subpartB.md) - [Subpart C — Calcium Carbide Production Subcategory](/cfr/40/chI-subchN-part415-subpartC.md) - [Subpart D — Calcium Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartD.md) - [Subpart E — Calcium Oxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartE.md) - [Subpart F — Chlor-alkali Subcategory (Chlorine and Sodium or Potassium Hydroxide Production)](/cfr/40/chI-subchN-part415-subpartF.md) - [Subpart G — Hydrochloric Acid Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartG.md) - [Subpart H — Hydrofluoric Acid Production Subcategory](/cfr/40/chI-subchN-part415-subpartH.md) - [Subpart I — Hydrogen Peroxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartI.md) - [Subpart J — Nitric Acid Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartJ.md) - [Subpart K — Potassium Metal Production Subcategory](/cfr/40/chI-subchN-part415-subpartK.md) - [Subpart L — Potassium Dichromate Production Subcategory](/cfr/40/chI-subchN-part415-subpartL.md) - [Subpart M — Potassium Sulfate Production Subcategory](/cfr/40/chI-subchN-part415-subpartM.md) - [Subpart N — Sodium Bicarbonate Production Subcategory](/cfr/40/chI-subchN-part415-subpartN.md) - [Subpart O — Sodium Carbonate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartO.md) - [Subpart P — Sodium Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartP.md) - [Subpart Q — Sodium Dichromate and Sodium Sulfate Production Subcategory](/cfr/40/chI-subchN-part415-subpartQ.md) - [Subpart R — Sodium Metal Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartR.md) - [Subpart S — Sodium Silicate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartS.md) - [Subpart T — Sodium Sulfite Production Subcategory](/cfr/40/chI-subchN-part415-subpartT.md) - [Subpart U — Sulfuric Acid Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartU.md) - [Subpart V — Titanium Dioxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartV.md) - [Subpart W — Aluminum Fluoride Production Subcategory](/cfr/40/chI-subchN-part415-subpartW.md) - [Subpart X — Ammonium Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartX.md) - [Subpart Y — Ammonium Hydroxide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartY.md) - [Subpart Z — Barium Carbonate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartZ.md) - [Subpart AA — Borax Production Subcategory](/cfr/40/chI-subchN-part415-subpartAA.md) - [Subpart AB — Boric Acid Production Subcategory](/cfr/40/chI-subchN-part415-subpartAB.md) - [Subpart AC — Bromine Production Subcategory](/cfr/40/chI-subchN-part415-subpartAC.md) - [Subpart AD — Calcium Carbonate Production Subcategory](/cfr/40/chI-subchN-part415-subpartAD.md) - [Subpart AE — Calcium Hydroxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartAE.md) - [Subpart AF — Carbon Dioxide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAF.md) - [Subpart AG — Carbon Monoxide and By-Product Hydrogen Production Subcategory](/cfr/40/chI-subchN-part415-subpartAG.md) - [Subpart AH — Chrome Pigments Production Subcategory](/cfr/40/chI-subchN-part415-subpartAH.md) - [Subpart AI — Chromic Acid Production Subcategory](/cfr/40/chI-subchN-part415-subpartAI.md) - [Subpart AJ — Copper Salts Production Subcategory](/cfr/40/chI-subchN-part415-subpartAJ.md) - [Subpart AK — Cuprous Oxide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAK.md) - [Subpart AL — Ferric Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartAL.md) - [Subpart AM — Ferrous Sulfate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAM.md) - [Subpart AN — Fluorine Production Subcategory](/cfr/40/chI-subchN-part415-subpartAN.md) - [Subpart AO — Hydrogen Production Subcategory](/cfr/40/chI-subchN-part415-subpartAO.md) - [Subpart AP — Hydrogen Cyanide Production Subcategory](/cfr/40/chI-subchN-part415-subpartAP.md) - [Subpart AQ — Iodine Production Subcategory](/cfr/40/chI-subchN-part415-subpartAQ.md) - [Subpart AR — Lead Monoxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartAR.md) - [Subpart AS — Lithium Carbonate Production Subcategory](/cfr/40/chI-subchN-part415-subpartAS.md) - [Subpart AT — Manganese Sulfate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAT.md) - [Subpart AU — Nickel Salts Production Subcategory](/cfr/40/chI-subchN-part415-subpartAU.md) - [Subpart AV — Strong Nitric Acid Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAV.md) - [Subpart AW — Oxygen and Nitrogen Production Subcategory](/cfr/40/chI-subchN-part415-subpartAW.md) - [Subpart AX — Potassium Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartAX.md) - [Subpart AY — Potassium Iodide Production Subcategory](/cfr/40/chI-subchN-part415-subpartAY.md) - [Subpart AZ — Potassium Permanganate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartAZ.md) - [Subpart BA — Silver Nitrate Production Subcategory](/cfr/40/chI-subchN-part415-subpartBA.md) - [Subpart BB — Sodium Bisulfite Production Subcategory](/cfr/40/chI-subchN-part415-subpartBB.md) - [Subpart BC — Sodium Fluoride Production Subcategory](/cfr/40/chI-subchN-part415-subpartBC.md) - [Subpart BD — Sodium Hydrosulfide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBD.md) - [Subpart BE — Sodium Hydrosulfite Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBE.md) - [Subpart BF — Sodium Silicofluoride Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBF.md) - [Subpart BG — Sodium Thiosulfate Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBG.md) - [Subpart BH — Stannic Oxide Production Subcategory](/cfr/40/chI-subchN-part415-subpartBH.md) - [Subpart BI — Sulfur Dioxide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBI.md) - [Subpart BJ — Zinc Oxide Production Subcategory [Reserved]](/cfr/40/chI-subchN-part415-subpartBJ.md) - [Subpart BK — Zinc Sulfate Production Subcategory](/cfr/40/chI-subchN-part415-subpartBK.md) - [Subpart BL — Cadmium Pigments and Salts Production Subcategory](/cfr/40/chI-subchN-part415-subpartBL.md) - [Subpart BM — Cobalt Salts Production Subcategory](/cfr/40/chI-subchN-part415-subpartBM.md) - [Subpart BN — Sodium Chlorate Production Subcategory](/cfr/40/chI-subchN-part415-subpartBN.md) - [Subpart BO — Zinc Chloride Production Subcategory](/cfr/40/chI-subchN-part415-subpartBO.md)