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HomeRCRA CodesF ListF004
F List — Wastes From Non-Specific Sources Listed - toxic

RCRA Hazardous Waste Number

F004

The following spent non-halogenated solvents: Cresols and cresylic acid, and nitrobenzene; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in F001, F002, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures

Official source: 40 CFR Part 261 (eCFR)

Have a F004 stream? See the dossier that replaces the feasibility study.

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High recoverySolvent distillation & reuse
High recoveryClosed-loop recovery at the point of generation
Medium recoveryFuel blending of still bottoms
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Hazard Basis

Listed - toxic

Regulation

40 CFR Part 261

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Classification

See the full F list

Manufacturing process wastes that arise across many industries: spent solvents (F001-F005), electroplating and metal finishing wastes (F006-F019), and others. The code follows the process, not the industry.

How F004 is handled

01

F-listed wastes carry the code from the process that produced them, in any industry.

02

The mixture rule applies: mixing an F-listed waste into another stream generally makes the whole stream F-listed.

03

Spent solvent F codes (F001-F005) are among the most commonly recycled RCRA streams - solvent recovery and fuel blending are established routes.

Other F-list codes

F001The following spent halogenated solvents used in degreasing: Tetrachloroethylene, trichloroethylene, methylene chloride, 1,1,1-trichloroethane, carbon tetrachloride, and chlorinated fluorocarbons; all spent solvent mixtures/blends used in degreasing containing, before use, a total of ten percent or more (by volume) of one or more of the above halogenated solvents or those solvents listed in F002, F004, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixturesF002The following spent halogenated solvents: Tetrachloroethylene, methylene chloride, trichloroethylene, 1,1,1-trichloroethane, chlorobenzene, 1,1,2-trichloro-1,2,2-trifluoroethane, ortho-dichlorobenzene, trichlorofluoromethane, and 1,1,2-trichloroethane; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above halogenated solvents or those listed in F001, F004, or F005; and still bottoms from the recovery of these spent solvents and spent solvent mixturesF003The following spent non-halogenated solvents: Xylene, acetone, ethyl acetate, ethyl benzene, ethyl ether, methyl isobutyl ketone, n-butyl alcohol, cyclohexanone, and methanol; all spent solvent mixtures/blends containing, before use, only the above spent non-halogenated solvents; and all spent solvent mixtures/blends containing, before use, one or more of the above non-halogenated solvents, and, a total of ten percent or more (by volume) of one or more of those solvents listed in F001, F002, F004, and F005; and still bottoms from the recovery of these spent solvents and spent solvent mixturesF005The following spent non-halogenated solvents: Toluene, methyl ethyl ketone, carbon disulfide, isobutanol, pyridine, benzene, 2-ethoxyethanol, and 2-nitropropane; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in F001, F002, or F004; and still bottoms from the recovery of these spent solvents and spent solvent mixturesF006Wastewater treatment sludges from electroplating operations except from the following processes: (1) Sulfuric acid anodizing of aluminum; (2) tin plating on carbon steel; (3) zinc plating (segregated basis) on carbon steel; (4) aluminum or zinc-aluminum plating on carbon steel; (5) cleaning/stripping associated with tin, zinc and aluminum plating on carbon steel; and (6) chemical etching and milling of aluminumF007Spent cyanide plating bath solutions from electroplating operationsF008Plating bath residues from the bottom of plating baths from electroplating operations where cyanides are used in the processF009Spent stripping and cleaning bath solutions from electroplating operations where cyanides are used in the process
View the full F list →

Where can a F004 stream go?

Recognized recovery routes for this waste family, ranked by typical recovery tier. Which route fits depends on your specific stream — composition, volume and region.

Solvent distillation & reuse

High recovery

Spent solvents are among the most recycled RCRA streams: distillation recovers a technical-grade solvent for reuse, with only the still bottoms remaining as waste.

40 CFR 261.1(c)(4) — reclamation

Closed-loop recovery at the point of generation

High recovery

Solvent reclaimed in an enclosed, hard-piped loop back into the generating process can be excluded from waste regulation entirely — the strongest position a solvent stream can be in.

40 CFR 261.4(a)(8) — closed-loop reclamation exclusion

Fuel blending of still bottoms

Medium recovery

Distillation residues and unrecoverable solvent fractions retain fuel value and route to fuel blending for energy recovery in permitted industrial furnaces.

40 CFR Part 266 Subpart H — burning for energy recovery

These are the typical routes for the F list. Your stream's actual options depend on its composition and where it sits.

See how this gets validated

See what your the following spent non-halogenated solvents: cresols and cresylic acid, and nitrobenzene; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in f001, f002, and f005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures stream is worth

Your the following spent non-halogenated solvents: cresols and cresylic acid, and nitrobenzene; all spent solvent mixtures/blends containing, before use, a total of ten percent or more (by volume) of one or more of the above non-halogenated solvents or those solvents listed in f001, f002, and f005; and still bottoms from the recovery of these spent solvents and spent solvent mixtures stream is assessed against chemistry, waste classification and proven recovery routes — graded results in your browser in seconds. No call, no commitment.

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Recovery tiers only. For numbers that survive a technical review, see the validation dossier.

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