Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2918.13.20.00Tariff line
Classification path
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
2918
Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives
Salts and esters of tartaric acid
Potassium bitartrate (Cream of tartar)
2918.13.20.00
Rates of duty
General rate (Column 1)Free
Special—
Column 211%
Unitkg
Printed page 1481
Measure flags
for origin CN, entry date 2026-10-25 · base rate Free
- 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 2918.13.20 is on L3
- PGAFDA FD3
Confirmed total 37.5% · max 37.5%Full duty breakdown →