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Ontario waste class 145 Leftover paint, colorant & coating waste.

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  • Based on Ontario Regulation 347 and registration guidance
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145, Paint/pigment/coating waste.

  • Ontario inorganic wastes

    Paint/pigment/coating waste

Ontario group: miscellaneous inorganic wastes and mixed wastes.

Paint, pigment & coating waste of inorganic type, in Ontario's miscellaneous inorganic & mixed waste group.

Is Ontario 145 hazardous waste?

Not from the code alone. Ontario 145 describes the waste stream, not whether it is hazardous. Ontario decides that from the hazardous characterization or liquid-industrial status, and from the exclusions. The 3-digit class needs a primary characterization letter to form the waste number.

For subject waste, the generator enters the class-and-letter waste number in the waste details of the Ontario hazardous waste manifest. Ontario’s exclusions and shipment rules also apply.

What does Ontario 145 cover?

Waste from applying paint, pigment or a coating goes here. That includes spray-booth waste, paper-coating residue and sludge from ink or paint. Waste from making inorganic pigments has its own class, so the process matters.

Is paint, pigment or coating waste Ontario 145 or another class?

CodeWhen it fits
145The stream is paint, pigment and coating residues from their use, including booth and ink sludge.
141The waste comes from manufacturing inorganic pigments rather than applying the coating.

The registration manual separates making inorganic pigment from later use of paint or coating. Keep the process history when choosing between these classes.

Which wastes take Ontario 145?

WasteWhen it’s 145
Paint and paint sludgeUse in pigment/coating work
Sludge and other residue from paint-spray boothsUse in pigment/coating work
Discarded material from coating paperUse in pigment/coating work
Ink-bearing sludgeUse in pigment/coating work
Paint-bearing sludgeUse in pigment/coating work

Which codes sit beside Ontario 145?

CodeWhat it is
135Other anion-bearing waste
142Primary lead/zinc/copper smelting waste
143Steelmaking residue
144Liquid tannery sludge
146Other inorganic sludge and solids
147Discarded chemical fertilizer
148Other inorganic waste chemicals
149Landfill leachate