Section VI · Organic chemicals
2918.22
O-Acetylsalicylic acid, its salts and esters:
Chapter
Organic chemicals
Heading
The product family within the chapter
Subheading
The specific good, identical worldwide
The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.
How the schedule reaches this code
- 29Organic chemicals
- 2918Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives:
- Carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives:
- O-Acetylsalicylic acid, its salts and esters:
Published US duty rates
Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.
- 2918.22.10.00O-Acetylsalicylic acid (Aspirin)kg
- General
- 6.5%
- Special (FTA)
- Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 82%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
- 2918.22.50.00Salts and esters of O-acetylsalicylic acidkg
- General
- 6.5%
- Special (FTA)
- Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
- Column 2
- 15.4¢/kg + 47.5%
Only if the goods qualify under one of these programs.
Countries without normal trade relations.
This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.
Other subheadings in heading 2918
- 2918.11Lactic acid, its salts and esters:
- 2918.12Tartaric acid
- 2918.13Salts and esters of tartaric acid:
- 2918.14Citric acid
- 2918.15Salts and esters of citric acid:
- 2918.16Gluconic acid, its salts and esters:
- 2918.172,2-Diphenyl-2-hydroxyacetic acid (benzilic acid)
- 2918.18Chlorobenzilate (ISO)
- 2918.19Other:
- 2918.21Salicylic acid and its salts:
- 2918.23Other esters of salicylic acid and their salts:
- 2918.29Other:
- 2918.30Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives:
- 2918.912,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters
- 2918.99Other:
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.