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P096 RCRA waste code Toxic fumigant gas, discarded unused.

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P096, Phosphine.

  • Acute hazardousP-listed waste

    Phosphine

P-list unused product.

Acute hazardous P-listed waste for unused phosphine, a toxic gas used to fumigate stored grain, also called hydrogen phosphide.

Is P096 hazardous waste?

Yes, when the listing applies. P096 is for unused phosphine that is thrown away, including off-specification product and qualifying residues. It is acute hazardous waste, so the stricter acute quantities apply even for a small amount.

Put P096 in Item 13 of a required hazardous waste manifest. The VSQG exemptions and empty-container rules and pharmaceutical containers have their own limits.

What does P096 cover?

It covers unused phosphine thrown away pure, at technical grade, or in a formulation where it is the only active ingredient. It also takes in off-specification batches, residues left in nonempty containers and cleanup residues from spills of these products. Inactive ingredients don't stop it counting as the only active ingredient.

CAS
7803-51-2
Table entries
Hydrogen phosphide / Phosphine
Hazard codes in the record
H (acute hazardous)

Is phosphine waste P096 or another code?

CodeWhen it fits
P096Thrown away unused, pure or technical grade, or as the only active ingredient. Qualifying product residues count too.
Characteristic waste (D001–D043)A used chemical or a different formulation that meets a hazardous-waste characteristic. Any process listings that apply count too.

Both rows can apply at once, because a listed unused product can also have a characteristic. Having this chemical in a manufacturing waste doesn't make the waste P096. Match the waste's origin, formulation and use history. Mixing or treating listed waste generally doesn't remove the listing. That takes an exclusion, an exception or an approved delisting.