RCRA Hazardous Waste Number
Corrosive waste - aqueous wastes with pH at or below 2 or at or above 12.5, or liquids that corrode steel faster than 6.35 mm per year
Official source: 40 CFR Part 261 (eCFR)Hazard Basis
Corrosive (characteristic)
Regulation
40 CFR Part 261
Need recovery options for a D002 stream?
Map recovery routes for D002Wastes that are hazardous because of what they do, not where they come from: ignitability (D001), corrosivity (D002), reactivity (D003), or toxicity (D004-D043, defined by TCLP contaminant thresholds). Any industrial waste stream can carry a D code.
A D code is determined by testing, not by source: TCLP for toxicity (D004-D043), flash point for ignitability (D001), pH for corrosivity (D002).
Characteristic wastes can exit hazardous status when the characteristic is removed - treatment to below the regulatory level is a recognized compliance path.
Generators must count D-coded streams toward their monthly generator status (VSQG / SQG / LQG).
Common industrial materials that can carry the D002 waste code — each finder page shows exactly when it applies.
Recognized recovery routes for this waste family, ranked by typical recovery tier. Which route fits depends on your specific stream — composition, volume and region.
Spent acids and caustics are regeneration candidates: spent pickling and etching liquors can be processed for acid recovery or metal-salt by-products, depending on free-acid strength and dissolved metal load.
40 CFR 261.1(c)(4) — reclamationWastes hazardous only for corrosivity can be treated in an elementary neutralization unit — a recognized unit type that manages the characteristic without a full treatment permit.
40 CFR 260.10 — definitionsThese are the typical routes for the D list. Your stream's actual options depend on its composition and where it sits.
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