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Ontario waste class 111 Used acid baths from metal cleaning, in Ontario's acid group.

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  • Based on Ontario Regulation 347 and registration guidance
  • Nothing is stored

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111, Spent pickling acid.

  • Ontario inorganic wastes

    Spent pickling acid

Ontario group: acid solutions.

Spent pickling acid, the acid solution left from steel & metal pickling, in the inorganic waste group of acid solutions.

Is Ontario 111 hazardous waste?

Not from the code alone. Ontario 111 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 111 cover?

Waste liquor from pickling. Examples are sulphuric or hydrochloric acid carrying iron salts after steel pickling.

Is spent pickling acid Ontario 111 or another class?

CodeWhen it fits
111The stream is waste liquor from pickling.

When several characterizations apply, the registration flowchart picks the primary one. A 3-digit class doesn't replace the flowchart or the exclusions.

Which wastes take Ontario 111?

WasteWhen it’s 111
Spent steel pickling liquorUse in metal pickling
Waste hydrochloric acidUse in metal pickling
Waste sulphuric acidUse in metal pickling
Steel-pickling acid solutions with ferrous salts, using sulphuric or hydrochloric acidUse in metal pickling

Which codes sit beside Ontario 111?

CodeWhat it is
112Heavy-metal acid waste
113Other metal/non-metal acid waste
114Other inorganic acid waste
121Heavy-metal alkaline waste
122Other cyanide-free alkaline waste
123Alkaline phosphate waste
131Neutralized heavy-metal waste
132Other neutralized metal waste