Harmonized Tariff Schedule of the U.S. › Chapter 38 Miscellaneous chemical products
3812.31.00.00Tariff line
Classification path
Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics
3812
Anti-oxidizing preparations and other compound stabilizers for rubber or plastics
Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
3812.31.00.00
Rates of duty
General rate (Column 1)6.5%
SpecialFree (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 23.7¢/kg + 60%
Unitkg
Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1668
Measure flags
for origin CN, entry date 2026-10-26 · base rate 6.5%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 3812.31.00 is on L3
- PGAEPA EP7
Confirmed total 44% · max 44%Full duty breakdown →