40 CFR 417.140 - Applicability; description of the neutralization of sulfuric acid esters and sulfonic acids subcategory.
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The provisions of this subpart are applicable to discharges resulting from the continuous or batch neutralization of sulfated and sulfonated alkylbenzenes, alcohols and other materials to convert them to neutral salts.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.