Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2931.90.10.00Tariff line
Classification path
Other organo-inorganic compounds
2931
Other
Aromatic
4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
2931.90.10.00
Rates of duty
General rate (Column 1)6.5%
SpecialFree (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Column 215.4¢/kg + 40%
Unitkg
Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1538
Measure flags
for origin CN, entry date 2026-10-25 · 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: not on any listN/A—8-digit subheading 2931.90.10 is not on Lists 1–4B or the four-year-review lists
- PGAEPA EP7
Confirmed total 19% · max 19%Full duty breakdown →