U.S. imports of Slaked Lime (Hydrated Lime) (HS 252220) totaled $2.5M in August 2026, imported from 20 countries.
Importers of Slaked Lime (Hydrated Lime) paid $52K in duties in August 2026, an average duty rate of 2.07% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Slaked Lime (Hydrated Lime) imports of $2.5M in August 2026 ran 24% above the year-to-date monthly average of $2.0M.
Last updated: August 2026 dataSlaked lime — calcium hydroxide formed by adding water to quicklime — serves as a cost-effective alkali across water and wastewater treatment, soil stabilization, food processing (nixtamalization), and construction applications. Mexico is the leading US import source, followed by Canada, with the Dominican Republic, Italy, and Thailand also supplying the market. All imports enter under tariff line 2522200000, and food-grade slaked lime used in tortilla or corn processing may be subject to FDA oversight depending on its intended end use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
401 import shipments a month
The key distinction is chemical form: quicklime is calcium oxide (CaO), while slaked lime is calcium hydroxide Ca(OH)₂, produced by hydrating quicklime. Importers should ensure the product's chemical specification and processing documentation clearly reflect the hydrated form to support classification under 2522200000 rather than 2522100000.
Yes. Slaked lime intended for food use — such as in nixtamalization of corn — may be subject to FDA review as a food additive or processing aid. Importers should confirm the product meets applicable food-grade specifications and consult a licensed customs broker or regulatory specialist regarding FDA prior notice and admissibility requirements.
ImportsExports
Imports
$2.5MYoY · free account
Exports
$603KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $23.1M of Slaked Lime (Hydrated Lime) and exported $6.8M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 252220 — Slaked Lime (Hydrated Lime), so the companies trading it can find you. Be the first supplier listed.
Subheading 2 of 3 in heading 2522
Subheading 252220 · $2.5M of $8.5M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2522200000 | Slaked Lime | $2.5M | 2.07% | 18.10% | $52K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2522200000 | Slaked Lime | $603K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Canada and Mexico together supply 81% of it. Dominican Republic pays 12.5% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
81.3% enters free of duty; duty collected equals 2.07% of imports for consumption.