Applicability; description of the commodity organic chemicals subcategory.

The provisions of this subpart are applicable to the process wastewater discharges resulting from the manufacture of the following SIC 2865 and 2869 commodity organic chemicals and commodity organic chemical groups. Product groups are indicated with an asterisk (*). (a) Aliphatic Organic Chemicals Acetaldehyde Acetic Acid Acetic Anhydride Acetone Acrylonitrile Adipic Acid *Butylenes (Butenes) Cyclohexane Ethanol Ethylene Ethylene Glycol Ethylene Oxide Formaldehyde Isopropanol Methanol Polyoxypropylene Glycol Propylene Propylene Oxide Vinyl Acetate 1,2-Dichloroethane 1,3-Butadiene (b) Aromatic Organic Chemicals Benzene Cumene Dimethyl Terephthalate Ethylbenzene m-Xylene (impure) p-Xylene Phenol *Pitch Tar Residues *Pyrolysis Gasolines Styrene Terephthalic Acid Toluene *Xylenes, Mixed o-Xylene (c) Halogenated Organic Chemicals Vinyl Chloride