U238 RCRA waste code Toxic chemical also called urethane, thrown away unused.
- Free, no account
- Based on 40 CFR 261.33 and EPA guidance
- Nothing is stored
Find a federal hazardous waste code
U238, Ethyl carbamate (urethane).
U-listed waste
Ethyl carbamate (urethane)
U-list unused product.
ComplyOnSiteIs U238 hazardous waste?
Yes, when the listing applies. U238 is the U-listed code for unused ethyl carbamate (urethane) thrown away, including off-specification product and qualifying residues. It is nonacute, not a P-listed acute waste. It depends on the product and how it is discarded, not on a TCLP result.
On a required hazardous waste manifest, put U238 in Item 13. Read the VSQG exemptions and empty-container rules and pharmaceutical containers too.
What does U238 cover?
This takes unused ethyl carbamate (urethane) that is pure, technical grade or the only active ingredient of a product. That includes off-specification batches, residues left in non-empty containers and spill cleanup residues. Inactive ingredients don't affect the only-active-ingredient test.
- CAS
- 51-79-6
- Table entries
- Carbamic acid, ethyl ester / Ethyl carbamate (urethane)
- Hazard codes in the record
- T (toxic)
- Rule
- 40 CFR 261.33(f)
Is ethyl carbamate (urethane) waste always U238?
| Code | When it fits |
|---|---|
| U238 | The unused chemical is thrown away pure, in technical grade or as the only active ingredient. Qualifying product residues are included. |
| Characteristic waste (D001–D043) | A used chemical or a different formulation has a hazardous characteristic. Assess any process listings too. |
Both rows can apply to one waste, because a listed unused product can also have a characteristic. The chemical merely turning up in a manufacturing waste doesn't make the waste U238. Match the waste’s origin, formulation and use history. Mixing or treating listed waste doesn't generally remove the listing. That takes an exclusion, an exception or an approved delisting.
Which codes sit beside U238?
| Code | What it is |
|---|---|
| U234 | 1,3,5-Trinitrobenzene |
| U235 | Tris(2,3-dibromopropyl) phosphate |
| U236 | Trypan blue |
| U237 | Uracil mustard — a cancer-treatment compound |
| U239 | Xylene |
| U240 | 2,4-D, salts and esters — a herbicide |
| U243 | Hexachloropropene |
| U244 | Thiram — a dithiocarbamate fungicide |
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