K062 RCRA waste code Corrosive & toxic acid bath from steel finishing.
- Free, no account
- Based on 40 CFR 261.32 and EPA hazardous-waste rules
- Nothing is stored
Find a federal hazardous waste code
K062, Spent acid pickling liquor from iron or steel finishing.
K-listed waste
Spent acid pickling liquor from iron or steel finishing
Industry: Iron and steel.

Is K062 hazardous waste?
Yes. K062 is nonacute K-listed hazardous waste when the waste comes from the named process and matches the named stream. The federal table gives it hazard code (C,T), corrosivity and toxicity.
A K listing depends on where and how the waste was made, not on a test result alone. A test may add a characteristic code, but it doesn't remove the listing.
On a required hazardous waste manifest, put K062 in Item 13. Check the VSQG exemptions and empty-container rules too.
What does K062 cover?
Spent pickle liquor from steel finishing at iron and steel facilities (SIC Codes 331 and 332).
- Hazard code
- (C,T), corrosivity and toxicity
- Industry
- Iron and steel
- Rule
- 40 CFR 261.32
Is iron and steel pickling liquor always K062?
| Code | When it fits |
|---|---|
| K062 | Spent pickle liquor generated by steel finishing operations of facilities within the iron and steel industry (SIC Codes 331 and 332). |
| K061 | Emission control dust/sludge from the primary production of steel in electric furnaces. |
The industry, production step and waste form tell these K listings apart, not the chemicals in the waste. The rows above are only the nearby listed streams, so also add any characteristic or other listing that fits. One waste can carry more than one federal code.
Which wastes take K062?
| Waste | When it’s K062 |
|---|---|
| Spent rust-removal acid | It is spent pickle liquor from steel finishing at an iron and steel facility within SIC 331 or 332 |
Which codes sit beside K062?
| Code | What it is |
|---|---|
| K050 | Refinery heat-exchanger cleaning sludge |
| K051 | API oil-water separator sludge from petroleum refining |
| K052 | Leaded tank-bottom residue from a petroleum refinery |
| K060 | Lime sludge from a coke-plant ammonia still |
| K069 | Air-pollution-control dust or sludge from secondary lead smelting |
| K071 | Brine-purification mud from mercury-cell chlorine production |
| K073 | Chlorinated hydrocarbon waste from graphite-anode chlorine production |
| K083 | Bottom distillation residue from making aniline |
Sources
- 40 CFR 261.32 — Hazardous wastes from specific sources
- 40 CFR 261.3 — Definition of hazardous waste
- 40 CFR 261.4 — Exclusions
- 40 CFR 260.10 — Definitions
- 40 CFR 262.14 — Conditions for exemption for a very small quantity generator
- 40 CFR 262.20 — General requirements
- Hazardous Waste Manifest Instructions
- 40 CFR 261.7 — Residues of hazardous waste in empty containers