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U353 RCRA waste code Toxic dye chemical, thrown away unused.

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U353, p-Toluidine.

  • U-listed waste

    p-Toluidine

U-list unused product.

Toxic U-listed hazardous waste for unused p-toluidine, a chemical used to make dyes, listed when thrown away as unused product.

Is U353 hazardous waste?

Yes, when the listing applies. U353 is the U-listed code for unused p-Toluidine 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 U353 in Item 13. Read the VSQG exemptions and empty-container rules and pharmaceutical containers too.

What does U353 cover?

This takes unused p-Toluidine 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
106-49-0
Table entries
Benzenamine, 4-methyl-; p-Toluidine
Hazard codes in the record
T (toxic)

Is p-Toluidine waste always U353?

CodeWhen it fits
U353The 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 U353. 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.