Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2920.22.00.00Tariff line
Classification path
Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives
2920
Phosphite esters and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives
Diethyl phosphite
2920.22.00.00
Rates of duty
General rate (Column 1)3.7%
SpecialFree (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 225%
Unitkg
Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1492
Measure flags
for origin CN, entry date 2026-10-26 · base rate 3.7%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 4B (9903.88.16, suspended)9903.88.16Suspended+15% (suspended)List 4B is suspended indefinitely; not collected
- PGAEPA EP5EPA EP7
Confirmed total 16.2% · max 16.2%Full duty breakdown →