U053 RCRA waste code Flammable, irritant liquid used to make solvents & resins.
- Free, no account
- Based on 40 CFR 261.33 and EPA guidance
- Nothing is stored
Find a federal hazardous waste code
U053, Crotonaldehyde.
U-listed waste
Crotonaldehyde
U-list unused product.
ComplyOnSiteIs U053 hazardous waste?
Yes, when the listing applies. U053 covers crotonaldehyde thrown away unused, including off-specification product and qualifying residues. It is a U-listed waste, not an acute P-listed one. The listing depends on the product and how it is discarded, not on a TCLP result alone.
U053 is nonacute hazardous waste. On a required hazardous waste manifest, put U053 in Item 13. VSQG exemptions and empty-container rules and pharmaceutical containers still apply.
What does U053 cover?
This covers crotonaldehyde discarded unused, either pure or technical grade or as the only active ingredient in a formulation. It also covers off-specification batches, residues in nonempty containers and spill cleanup residues of those products. Inactive ingredients in the formulation don't affect this.
- CAS
- 4170-30-3
- Table entries
- 2-Butenal; Crotonaldehyde
- Hazard codes in the record
- T (toxic)
- Rule
- 40 CFR 261.33(f)
Is waste crotonaldehyde always U053?
| Code | When it fits |
|---|---|
| U053 | The unused chemical is thrown away, pure or technical grade or as the sole active ingredient. Residues from those products count too. |
| Characteristic waste (D001–D043) | A used chemical or a different formulation shows a hazardous characteristic. Process listings can apply too. |
A listed unused product can also have a characteristic, so more than one row can apply. Merely finding this chemical in a manufacturing waste doesn't make it U053. Match the waste's origin, formulation and use history. Mixing listed waste with solid waste, or treating it, generally doesn't remove the listing. That takes an exclusion, an exception or an approved delisting.
Which codes sit beside U053?
| Code | What it is |
|---|---|
| U049 | 4-Chloro-o-toluidine, hydrochloride |
| U050 | Chrysene |
| U051 | Creosote |
| U052 | Cresol (cresylic acid) |
| U055 | Cumene |
| U056 | Cyclohexane |
| U057 | Cyclohexanone |
| U058 | Cyclophosphamide — a chemotherapy drug |
Sources
- 40 CFR 261.33 — Discarded commercial chemical products, off-specification species, container residues, and spill residues thereof
- 40 CFR 261.3 — Definition of hazardous waste
- 40 CFR 261.7 — Residues of hazardous waste in empty containers
- 40 CFR 260.10 — Definitions
- 40 CFR 262.14 — Conditions for exemption for a very small quantity generator
- 40 CFR 262.20 — General requirements
- 40 CFR 266.507 — Residues of hazardous waste pharmaceuticals in empty containers
- Hazardous Waste Manifest Instructions