HS 281122

Silicon Dioxide

U.S. imports of silicon dioxide (HS 281122) totaled $24.9M in April 2026, traded with 40 countries.

Last updated: April 2026 data

Fumed silica, precipitated silica, and synthetic silica gel — all forms of silicon dioxide — are widely traded industrial minerals with distinct performance profiles that drive separate demand streams in rubber reinforcement, coatings, food additives, and semiconductor-grade applications. The US schedule distinguishes synthetic silica gel (2811221000) from other silicon dioxide (2811225000), with a general line (2811220000) also present. China is the leading import source, followed by Japan and Germany, reflecting both commodity-grade and high-purity specialty supply chains. France and India round out the top supplier group.

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Imports

$24.9M

from 40 countries · YTD: $110.8M

Exports

$19.6M

Deficit of $5.3M (net importer)

Trade balance: deficit of $5.3M (net importer)

YTD: $110.8M imported (April 2026)

797 shipments/month

Top Import Sources

View all

1CHINA$9.6M

Import Trend (12 months)

Monthly import values over time

Geographic Breakdown

URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.

HS 284420

$450.1M

NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC

HS 284410

$242.8M

ANHYDROUS AMMONIA

HS 281410

$116.5M

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Frequently Asked Questions

How does the US tariff schedule differentiate between types of silicon dioxide?

The schedule separates synthetic silica gel (2811221000) from other forms of silicon dioxide (2811225000), with a general line (2811220000) also available. The correct line depends on whether the product is a manufactured gel form or another physical form such as fumed or precipitated silica.

What countries are the primary foreign sources of silicon dioxide imported into the US?

China is the dominant supplier, with Japan and Germany also ranking among the top sources. France and India are additional significant suppliers, reflecting the global spread of both commodity and specialty silica production.