P001 RCRA waste code An anticoagulant medicine & rat poison, thrown away unused.

Free, no account
Based on 40 CFR 261.33 and EPA guidance
Nothing is stored

Acute hazardousP-listed waste
Warfarin and salts — an anticoagulant medicine and rodenticide

Unused product at concentrations greater than 0.3%.

Acute hazardous P-listed waste for unused warfarin & its salts, an anticoagulant medicine & rodenticide.

Is P001 hazardous waste?

Yes, when the listing applies. P001 covers discarded, unused warfarin and salts, including off-specification product and qualifying residues. It is acute hazardous waste, so the stricter acute quantities apply even for a small amount of chemical.

On a required hazardous waste manifest, put P001 in Item 13. See VSQG exemptions and empty-container rules and pharmaceutical containers.

What does P001 cover?

Discarded unused warfarin and salts above 0.3%. The product must be pure or technical grade, or have warfarin as its only active ingredient. Off-specification batches and qualifying container or spill cleanup residues count. The 0.3% line separates this P listing from its paired U listing.

CAS: 81-81-2
Table entries: 2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-oxo-1-phenylbutyl)-, & salts, when present at concentrations greater than 0.3%; Warfarin, & salts, when present at concentrations greater than 0.3%
Hazard codes in the record: H (acute hazardous)
Rule: 40 CFR 261.33(e)
CAS qualification: The table gives the parent-compound CAS. It does not name every salt or derivative.

Are unused warfarin and salts always P001?

Code	When it fits
P001	Unused warfarin is discarded above 0.3%, as pure or technical grade or as the only active ingredient.
U248	Unused warfarin is at 0.3% or less, as pure or technical grade or as the only active ingredient.
Characteristic waste (D001–D043)	A used chemical or a different formulation shows a hazardous waste characteristic. Check any process listings that fit too.

A listed unused product can also show a characteristic, so these rows can apply together. A manufacturing waste that merely contains this chemical isn't P001. Match the waste's origin, formulation and use history. Mixing listed waste with solid waste, or treating it, generally doesn't remove the listing. Only an exclusion, exception or approved delisting does. The parent-compound CAS identifies the chemical but doesn't prove every salt shares that number. The listed chemical wording controls.

Which wastes take P001?

Waste	When it’s P001
Waste pharmaceuticals	Unused warfarin above 0.3% is discarded and is the only active ingredient.

Which codes sit beside P001?

Code	What it is
P002	1-Acetyl-2-thiourea
P003	Acrolein
P004	Aldrin — an insecticide
P005	Allyl alcohol
P006	Aluminum phosphide
P007	5-(Aminomethyl)-3-isoxazolol
P008	4-Aminopyridine
P009	Ammonium picrate — an explosive compound