U046 RCRA waste code Toxic chlorinated ether used to make resins, a carcinogen.
- Free, no account
- Based on 40 CFR 261.33 and EPA guidance
- Nothing is stored
Find a federal hazardous waste code
U046, Chloromethyl methyl ether.
U-listed waste
Chloromethyl methyl ether
U-list unused product.
ComplyOnSiteIs U046 hazardous waste?
Yes, when the listing applies. U046 covers chloromethyl methyl ether 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.
U046 is nonacute hazardous waste. On a required hazardous waste manifest, put U046 in Item 13. VSQG exemptions and empty-container rules and pharmaceutical containers still apply.
What does U046 cover?
This covers chloromethyl methyl ether 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
- 107-30-2
- Table entries
- Chloromethyl methyl ether or Methane, chloromethoxy-
- Hazard codes in the record
- T (toxic)
- Rule
- 40 CFR 261.33(f)
Is waste chloromethyl methyl ether always U046?
| Code | When it fits |
|---|---|
| U046 | 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 U046. 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 U046?
| Code | What it is |
|---|---|
| U042 | 2-Chloroethyl vinyl ether |
| U043 | Vinyl chloride |
| U044 | Chloroform |
| U045 | Methyl chloride |
| U047 | beta-Chloronaphthalene |
| U048 | o-Chlorophenol |
| U049 | 4-Chloro-o-toluidine, hydrochloride |
| U050 | Chrysene |
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