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U020 RCRA waste code Corrosive, reactive liquid used to make dyes & drugs.

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U020, Benzenesulfonyl chloride.

  • U-listed waste

    Benzenesulfonyl chloride

U-list unused product.

U-listed hazardous waste for unused benzenesulfonyl chloride, a corrosive & reactive liquid used in chemical synthesis.

Is U020 hazardous waste?

Yes, when the listing applies. U020 covers the unused benzenesulfonyl chloride described below when it is discarded, 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.

The listing rests only on ignitability, corrosivity or reactivity. Under 261.3(g) it stops applying once the waste shows no hazardous-waste characteristic. Another listing can still apply, and the land disposal restrictions continue.

U020 is nonacute hazardous waste. On a required hazardous waste manifest, put U020 in Item 13. See VSQG exemptions and empty-container rules and pharmaceutical containers.

What does U020 cover?

This covers unused benzenesulfonyl chloride discarded in pure or technical grade, or in a formulation where it is the only active ingredient. It also covers off-specification batches, residues in nonempty containers and spill cleanup residues from those products. Inactive ingredients don't stop benzenesulfonyl chloride counting as the sole active ingredient.

CAS
98-09-9
Table entries
Benzenesulfonic acid chloride (C,R) and Benzenesulfonyl chloride (C,R)
Hazard codes in the record
C (corrosive), R (reactive)

Is benzenesulfonyl chloride waste always U020?

CodeWhen it fits
U020The unused chemical is discarded as a pure or technical grade product or as the sole active ingredient. Residues from that product also count.
Characteristic waste (D001–D043)A used chemical or a different formulation meets a hazardous-waste characteristic. Check any process listings that apply too.

Both can apply, since a listed unused product can also show a characteristic. Having this chemical in a manufacturing waste doesn't make the waste U020. Match the waste's origin, formulation and use history. Mixing listed waste with solid waste, or treating it, doesn't normally remove the listing. Only an exclusion, an exception or an approved delisting does.