Hydrated Lime Powder for Construction
Hydrated lime powder for construction is finely ground slaked lime produced by hydrating quicklime, used in mortar and plaster. It is classified under tariff item 2522.20.00 as slaked lime, and is not excluded by Chapter 25 notes since it is not processed beyond hydration and grinding.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is hydraulic lime that sets under water
Hydraulic lime is a separate tariff item in the same heading.
If the product is a prepared mortar or concrete mix
Prepared building mixes fall under Chapter 38.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify the product is not mixed with cement or other binders, which would change classification
• Provide the particle size distribution to confirm it is a powder, not a putty
• Check if the product meets Canadian construction material standards for customs clearance
Related Products under Tariff item 2522.20.00
Agricultural Hydrated Lime for Soil pH Adjustment
Agricultural hydrated lime is a coarse slaked lime product produced by reacting quicklime with water, used to raise soil pH and supply calcium for crop growth. It falls under tariff item 2522.20.00 as slaked lime, distinct from fertilizers of Chapter 31, and is not processed beyond hydration.
Dolomitic Hydrated Lime
Dolomitic hydrated lime is produced by partially slaking dolomitic quicklime, containing both calcium and magnesium hydroxides. It is classified under tariff item 2522.20.00 as slaked lime, and is not excluded by Chapter 25 notes since it is not a pure calcium oxide or hydroxide of heading 28.25.
Flue Gas Desulfurization Slaked Lime
Flue gas desulfurization slaked lime is a reactive hydrated lime used in scrubbers to remove sulfur dioxide from power plant emissions. It is classified under tariff item 2522.20.00 as slaked lime, provided it is not mixed with other chemical additives that would change its classification.
Food-Grade Slaked Lime for Tortilla Production
Food-grade slaked lime is high-purity calcium hydroxide used in nixtamalization for tortilla production. It is classified under tariff item 2522.20.00 as slaked lime, and is not excluded by Chapter 25 notes despite its food-contact use, as it is not a medicament or cosmetic product.
Limewash Paint Base Slaked Lime
Limewash paint base slaked lime is a pure slaked lime product in powder or putty form, intended for mixing with pigments to create breathable coatings. It is classified under tariff item 2522.20.00 as slaked lime, and is not excluded by Chapter 25 notes as it is not a prepared paint of Chapter 32.
Slaked Lime Putty for Plastering
Slaked lime putty is a wet, aged paste of calcium hydroxide used in traditional lime plaster and decorative finishes. It is classified under tariff item 2522.20.00 as slaked lime, and is not excluded by Chapter 25 notes as it is not processed beyond hydration, despite its high water content.