Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included

Every line of heading 3815

• 3815 Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included.
• 3815.11.00.00 With nickel or nickel compounds as the active substance (kg): General Free; Special none; Column 2 25%.
• 3815.12.00 With precious metal or precious metal compounds as the active substance: General Free; Special none; Column 2 25%.
• 3815.12.00.10 With platinum group metals as the active substance (kg).
• 3815.12.00.90 Other (under: With precious metal or precious metal compounds as the active substance) (kg).
• 3815.19.00.00 Other (under: Supported catalysts) (kg): General Free; Special none; Column 2 25%.
• 3815.90 Other (under: Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included).
• 3815.90.10.00 Of bismuth, of tungsten or of vanadium (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 40%.
• 3815.90.20.00 Of mercury or of molybdenum (under: Consisting wholly of inorganic substances) (kg): General 2.8%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 18%.
• 3815.90.30.00 Other (under: Consisting wholly of inorganic substances) (kg): General Free; Special none; Column 2 25%.
• 3815.90.50.00 Other (under: Other) (kg): General 5%; Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.