U.S. imports of Fluorspar (>97% Calcium Fluoride) (HS 252922) totaled $17.6M in August 2026, imported from 10 countries.
Last updated: August 2026 dataHigh-purity fluorspar exceeding 97% calcium fluoride by weight — classified under 2529220000 — is the preferred feedstock for hydrofluoric acid synthesis and specialty ceramic applications where lower-grade material is unsuitable. Mexico is the leading supplier to the US at this purity tier, and imports from Mexico meeting USMCA rules of origin qualify for preferential duty treatment. South Africa and Mongolia are secondary sources, providing geographic diversification for buyers concerned about single-country concentration.
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31 import shipments a month
Customs brokers recommend including a third-party or supplier-issued certificate of analysis (CoA) showing CaF₂ content exceeding 97% by weight, along with silica, sulfur, and carbonate impurity levels. CBP may request this documentation to verify the correct subheading, particularly when the invoice description is ambiguous between acid-grade and metallurgical-grade material.
Hydrofluoric acid (HF) is produced by reacting fluorspar with sulfuric acid. Acid-grade fluorspar (>97% CaF₂) is required because impurities — especially silica and sulfur — degrade HF yield and create processing complications. Metallurgical-grade material (≤97% CaF₂) is generally not suitable for direct HF production without additional beneficiation, which is why the two purity tiers carry separate HTS classifications and often trade at different price points.
ImportsExports
Imports
$17.6MYoY · free account
Exports
$172KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $202.0M of Fluorspar (>97% Calcium Fluoride) and exported $1.8M.
Through August 2026 · exports 11 of 12 months reported. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 252922 — Fluorspar (>97% Calcium Fluoride), so the companies trading it can find you. Be the first supplier listed.
Subheading 1 of 4 in heading 2529
Subheading 252922 · $17.6M of $26.6M
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 |
|---|---|---|---|---|
| 2529220000 | Fluorspar Contng by Wt Gt 97% Calcium Fluoride | $17.6M | 0.00% | 0.00% |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2529220000 | Fluorspar Contng by Wt Gt 97% Calcium Fluoride | $172K |
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
Mexico and Canada together supply 99% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.