HTSUS, United States
2522.10.00.00
Quicklime
Classification path
- Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825
- Quicklime
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 0.2¢/kg, including weight of container
- Unit of quantity
- kg
Related lines in heading 2522
About heading 2522
Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825
Heading 2522 covers quicklime, slaked lime and hydraulic lime, except calcium oxide or hydroxide classifiable in heading 2825. It has three declarable lines: quicklime, slaked lime and hydraulic lime, and all three carry a general (MFN) rate of Free.
Full guide to heading 2522Products in this heading
- Quicklime (calcium oxide) in lumps or powder
- Slaked lime (calcium hydroxide)
- Hydrated lime for soil pH adjustment
- Hydraulic lime for masonry mortar
- Lime putty for plaster and mortar
- Builder's lime for mortar mixes
- Finishing lime for plaster
- Quicklime for water treatment or steelmaking
Frequently asked questions
What is the HTS code for quicklime?
Quicklime is classified under 2522.10.00.00. Its general (MFN) duty rate is Free.
What is the duty on slaked lime?
Slaked lime is classified under 2522.20.00.00. The general (MFN) duty rate is Free.
How do I classify hydraulic lime?
Use 2522.30.00.00 for hydraulic lime. The general (MFN) duty rate is Free; cement products are classified in heading 2523.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.