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SITCSection 2
U.S. imports of mineral substances, not elsewhere specified (SITC 27899) totaled $6.9M in April 2026, traded with 32 countries.
Importers of Mineral Substances, Not Elsewhere Specified paid $26K in duties in April 2026 — an effective duty rate of 8.1% on $322K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataA residual catch-all for mineral substances that do not fit any more specific SITC heading, this category captures a heterogeneous range of naturally occurring inorganic materials whose trade significance varies widely by shipment. Classification here often signals that a commodity is either newly traded, highly specialized, or exists at the boundary between mineral and chemical product categories — making precise documentation of physical form, chemical composition, and degree of processing especially important. Importers and brokers should approach entries under this heading with particular care, as customs authorities may challenge the residual classification if a more specific heading arguably applies.
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A binding ruling request from US Customs and Border Protection is the most reliable protection for ambiguous mineral commodities. Short of that, importers should provide a detailed technical specification sheet, a certificate of analysis showing chemical composition, a description of the extraction and processing method, and a written explanation of why no more specific heading applies — all of which support the residual classification if CBP questions the entry.
The degree of processing is often the deciding factor: minimally processed materials extracted from geological deposits tend to remain in mineral headings, while chemically refined or synthesized substances shift to chemical product classifications. Importers should document the production process in detail and, where the boundary is genuinely unclear, seek a CBP binding ruling or consult a licensed customs broker before the first shipment.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| JAPAN | $1.5M | $2.1M | +$608K |
| CANADA | $987K | $2.3M | +$1.3M |
| NETHERLANDS | $11K | $2.5M | +$2.5M |
| MEXICO | $1.7M | $683K | -$975K |
| UNITED KINGDOM | $59K | $1.6M | +$1.5M |