Construction Quicklime for Mortar
High-reactivity quicklime in pebble form, intended for slaking into lime putty for traditional masonry mortars and plasters. It is a crude calcined product, not yet hydrated or mixed, and thus qualifies as quicklime under tariff item 2522.10.00.
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 quicklime has been slaked into lime putty or hydrated lime
Slaked lime is a separate product under the tariff.
If the product is a ready-mixed mortar containing quicklime and other additives
Prepared mortars are classified in Chapter 38, not as raw quicklime.
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
• Confirm the product is unslaked quicklime, not hydrated lime, to avoid misclassification
• Store in sealed, moisture-proof containers to prevent premature hydration during shipping
• If the quicklime is imported for use in heritage restoration, check if any provincial building codes impose additional standards on lime-based materials
Related Products under Tariff item 2522.10.00
Agricultural Quicklime Soil Amendment
Agricultural quicklime in pebble form, produced by calcining limestone to drive off carbon dioxide, leaving calcium oxide. It is used to raise soil pH and supply calcium in acidic farm fields. As a crude, unhydrated mineral product, it falls under tariff item 2522.10.00 for quicklime.
Chemical Manufacturing Quicklime
Technical-grade quicklime in lump form, produced by calcining high-purity limestone, used as a feedstock in chemical manufacturing such as calcium carbide production. It is unhydrated and unprocessed beyond calcination, meeting the scope of heading 25.22 for quicklime.
Gold Mining Quicklime
Lump quicklime used in gold mining for cyanidation processes, providing alkaline conditions for ore leaching. It is unhydrated calcium oxide produced by calcination, falling squarely within tariff item 2522.10.00 for quicklime.
Industrial Quicklime Powder
High-calcium quicklime in fine powder form, produced by calcining limestone and used in steelmaking for slag formation and impurity removal. The powder is unhydrated and not mixed, qualifying as quicklime under tariff item 2522.10.00.
Metallurgical Grade Quicklime
Coarse quicklime lumps, graded for use in blast furnaces and steel desulfurization, derived from high-purity limestone calcination. The product is unslaked and unprocessed beyond calcination, meeting the definition of quicklime in tariff item 2522.10.00.
Paper Industry Quicklime
Reactive quicklime powder used in kraft pulping for caustic recovery cycles and brightness control. It is unhydrated calcium oxide from limestone calcination, fitting tariff item 2522.10.00 for quicklime.