US Import Duty
HTS 3815.90.20.00 Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included › Other › Of mercury or of molybdenum
With trade agreement: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
HTS code 3815.90.20.00 covers "Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included › Other › Of mercury or of molybdenum" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.
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U.S. exports of Reaction initiators, reaction accelerators and catalytic preparations
The United States exported $4.5 billion of goods under HS heading 3815 in 2025, to 111 countries and territories. Top destination markets:
| Country | Exports 2025 | YTD |
|---|---|---|
| Mexico | $970 million | ▲ +46% |
| Canada | $446 million | ▼ −26% |
| China | $354 million | ▼ −8.6% |
| Saudi Arabia | $335 million | ▼ −20% |
| South Korea | $320 million | ▲ +5.8% |
January–July 2026: $2.4 billion (▼ −2.0%)
All markets and states for this product →
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. Source: U.S. Census Bureau, International Trade data (census.gov/foreign-trade), FAS value in current U.S. dollars, latest month July 2026. Change vs the same months of the previous year: Fromerica calculation.
Official US tariff data (USITC), refreshed daily.Last checked against the official schedule: . See recent US tariff changes →