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RCRA waste code finder

U085 RCRA waste code Flammable, toxic epoxide used as a cross-linking chemical, thrown away unused.

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  • Based on 40 CFR 261.33 and EPA guidance
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U085, 2,2′-Bioxirane.

  • U-listed waste

    2,2′-Bioxirane

U-list unused product.

Listed withU-listed waste

Ignitable & toxic U-listed hazardous waste for unused 2,2′-bioxirane, a reactive epoxide, also called diepoxybutane.

Is U085 hazardous waste?

Yes, when the listing applies. U085 covers unused 2,2′-Bioxirane that is thrown away, including off-specification product and qualifying residues. It is a U-listed waste, not an acute P-listed one. Whether it is listed depends on the product and how it is discarded, not on a TCLP result alone.

The table marks these entries differently. An entry with no letter is toxic (T) under 261.33(f), so a missing letter doesn't mean no hazard. “2,2′-Bioxirane” has no mark, so it counts as T (toxic). “1,2:3,4-Diepoxybutane (I,T)” is marked (I,T).

U085 is nonacute hazardous waste once the listing holds. On a required hazardous waste manifest, put U085 in Item 13. Also read VSQG exemptions and empty-container rules and pharmaceutical containers.

What does U085 cover?

Unused 2,2′-Bioxirane counts when it is discarded pure, in technical grade, or as the only active ingredient of a formulation. Off-specification batches, residues left in non-empty containers and spill cleanup residues of those products count too. Inactive ingredients don't stop it being the sole active ingredient.

CAS
1464-53-5
Table entries
2,2′-Bioxirane; 1,2:3,4-Diepoxybutane (I,T)
Printed hazard annotations
“2,2′-Bioxirane”: unmarked: T (toxic) by default; “1,2:3,4-Diepoxybutane (I,T)”: (I,T).

Is waste 2,2′-Bioxirane always U085?

CodeWhen it fits
U085The unused chemical is thrown away pure, in technical grade or as the sole active ingredient. Qualifying product residues count too.
Characteristic waste (D001–D043)A used chemical or a different formulation shows a hazardous-waste characteristic. Assess any process listings too.

The rows can stack, since an unused listed product can also show a characteristic. Finding the chemical in manufacturing waste doesn't make that waste U085. Go by where the waste came from, what was in it and how it was used. Mixing listed waste with other solid waste, or treating it, usually doesn't end the listing. That takes an exclusion, an exception or an approved delisting.

Which codes sit beside U085?

CodeWhat it is
U0812,4-Dichlorophenol
U0822,6-Dichlorophenol
U083Propylene dichloride
U0841,3-Dichloropropene
U086N,N′-Diethylhydrazine
U087O,O-Diethyl S-methyl dithiophosphate
U088Diethyl phthalate
U089Diethylstilbesterol

Sources