Schedule in force 2026-08-31HTS 2026HTSRev17HTS 2918 · Chapter 29
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HTS 2918

Heading 2918 covers carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 2918.11.10.00, the first line under this heading. Its Column 1 rate is 5.1%; other lines under 2918 carry different Column 1 rates. On top of that, the ad valorem total depends on origin: China carries 42.60% and Italy carries 10.00%.

Chapter 29 · Verified 2026-08-31
HTS 2026HTSRev17

62 statistical lines under this heading · 10 distinct Column 1 rates · highest ad valorem total 42.60% from China · lowest 10.00% from Italy

OriginAd valorem layersLayersReported under
China CHN42.60%mfn + s301 + s3019903.88.03 9903.05.31
Vietnam VNM17.60%mfn + s3019903.05.84
Thailand THA17.60%mfn + s3019903.05.77
Brazil BRA17.60%mfn + s3019903.05.27
Mexico MEX15.10%mfn + s3019903.05.55
Canada CAN15.10%mfn + s3019903.05.29
India IND15.10%mfn + s3019903.05.44
United Kingdom GBR15.10%mfn + s3019903.05.81
Japan JPN12.50%s3019903.05.49
South Korea KOR12.50%s3019903.05.71
Germany DEU10.00%s3019903.05.39
Italy ITA10.00%s3019903.05.39
Table 1Rate by country of origin for 2918.11.10.00, resolved 2026-08-31. The first statistical line under 2918; other lines may carry different Column 1 rates.
CodeDescriptionColumn 1SpecialUnits
2918.11.10.00Lactic acid5.1%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.11.51.00Other3.4%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.12.00.00Tartaric acidFree—kg
2918.13.10.00Potassium antimony tartrate (Tartar emetic)Free—kg
2918.13.20.00Potassium bitartrate (Cream of tartar)Free—kg
2918.13.30.00Potassium sodium tartrate (Rochelle salts)Free—kg
2918.13.50.00Other4.4%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.14.00.00Citric acid6%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.15.10.00Sodium citrate6.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.15.50.00Other3.7%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.16.10.00Gluconic acid6%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.16.50.10Sodium gluconateinherited—kg
2918.16.50.20Calcium gluconateinherited—kg
2918.16.50.90Otherinherited—kg
2918.17.00.012,2-Diphenyl-2-hydroxyacetic acid (benzilic acid)5.8%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2918.18.00.00Chlorobenzilate (ISO)6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2918.19.11.00Benzilic acid, methyl ester5.8%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2918.19.12.00Mandelic acidFree—kg
2918.19.15.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO, K,KR,MA,OM,P, PA,PE,S,SG)kg
2918.19.20.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2918.19.31.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2918.19.60.00Malic acid4%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.19.90.00Other4%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2918.21.10.00Suitable for medicinal use6.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.21.50.00Other6.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.22.10.00O-Acetylsalicylic acid (Aspirin)6.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.22.50.00Salts and esters of O-acetylsalicylic acid6.5%Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.23.10.00Salol (Phenyl salicylate) suitable for medicinal use6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.23.20.00Odoriferous or flavoring compounds6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.23.30.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2918.23.50.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2918.29.04.002,3-Cresotic acid; 2-Hydroxybenzoic acid, calcium salt; 1-Hydroxy-2-naphthoic acid; 2-Hydroxy-1-naphthoic acid; 1-Hydroxy-2-naphthoic acid, phenyl ester;α-Resorcylic acid;γ-Resorcylic acid; and 5-Sulfosalicylic acid5.8%Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2918.29.06.001,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate)5.8%Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG)kg
2918.29.08.00m-Hydroxybenzoic acidFree—kg
2918.29.20.00Gentisic acid; and Hydroxycinnamic acid and its salts6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2918.29.22.00p-Hydroxybenzoic acid6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.29.25.003-Hydroxy-2-naphthoic acid6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)kg
2918.29.30.00Gallic acid1%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.29.39.004,4-Bis(4-hydroxyphenyl) pentanoic acid; and 3,5,6-Trichlorosalicylic acidFree—kg
2918.29.65.00Products described in additional U.S. note 3 to section VI6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2918.29.75.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,L,MA,OM,P, PA,PE,S,SG)kg
2918.30.10.001-Formylphenylacetic acid, methyl ester5.8%Free (A+,AU,BH,CL,CO,D, E,IL,JO, KR,MA,OM,P, PA,PE,S,SG)kg
2918.30.15.002-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoateFree—kg
2918.30.25.10Methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)inherited—kg
2918.30.25.50Otherinherited—kg
2918.30.30.00Other6.5%Free (A+,AU,BH,CL,CO,D, E,IL,JO,K, KR,MA,OM,P, PA,PE,S,SG)kg
2918.30.70.00Dimethyl acetyl succinate; Oxalacetic acid diethyl ester, sodium salt; 4,4,4-Trifluoro-3-oxobutanoic acid, ethyl ester; and 4,4,4-Trifluoro-3-oxobutanoic acid, methyl esterFree—kg
2918.30.90.00Other3.7%Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,L,MA,OM,P,PA,PE,S,SG)kg
2918.91.00.002,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.99.05.00p-Anisic acid; Clofibrate; and 3-Phenoxybenzoic acid5.8%Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.99.06.001-Hydroxy-6-octadecyloxy-2-naphthalene- carboxylic acid; and 1-Hydroxy-6-docosyloxy-2-naphthalene- carboxylic acidFree—kg
2918.99.14.002-(4-Chloro-2-methylphenoxy)propionic acid and its saltsFree—kg
2918.99.18.004-(4-Chloro-2-methylphenoxy) butyric acid;p-Chlorophenoxyacetic acid; and 2-(2,4-Dichlorophenoxy) propionic acid6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.99.20.102,4-Dichlorophenoxyacetic acid, its salts and estersinherited—kg
2918.99.20.152-Methyl-4-chlorophenoxyacetic acidinherited—kg
2918.99.20.50Otherinherited—kg
2918.99.30.00Drugs6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)kg
2918.99.35.00Odoriferous or flavoring compounds6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)kg
2918.99.43.102-Methyl-3-phenyloxirane-2-carboxylic acid (P-2-P methyl glycidic acid), its salts and estersinherited—kg
2918.99.43.50Otherinherited—kg
Table 2Statistical suffixes under 2918. Duty is assessed at the 10-digit level; the Column 1 rate is stated at the subheading and inherited below it.
ProgrammeRate as publishedContributionReported underIn force from
Column 1 General (MFN)5.1%5.10%—not established

Source: USITC, Harmonized Tariff Schedule of the United States, 2026 HTS Revision 17, published 2026-08-01. Verified 2026-08-31.

Section 301The duty provided in the applicable subheading + 25%25.00%9903.88.032018-09-24
Status unconfirmed. The second statutory four-year review of this action is running. The continuation-request deadlines for the underlying 2018 actions closed on 2026-07-05 and 2026-08-22 and no continuation notice has been published. There is no evidence of termination either, and the duty is almost certainly still collectible; what we cannot do is cite a document saying so.

Source: USTR, Notice of Modification of Section 301 Action: China's Acts, Policies and Practices Related to Technology Transfer (List 3) (83 FR 47974), published 2018-09-21. Verified 2026-08-31.

Section 301The duty provided in the applicable subheading + 12.5%12.50%9903.05.312026-07-24

Source: USTR, Notice of Actions in Section 301 Investigations of Various Economies (FR Doc. 2026-15181), published 2026-07-28. Verified 2026-08-31.

Table 3Duty stack for 2918.11.10.00 from China, resolved 2026-08-31.

Common questions

What is the duty rate for HTS 2918?
Heading 2918 covers carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives. Duty is assessed at the 10-digit statistical line; the figures here are resolved for 2918.11.10.00, the first line under this heading. Its Column 1 rate is 5.1%; other lines under 2918 carry different Column 1 rates. On top of that, the ad valorem total depends on origin: China carries 42.60% and Italy carries 10.00%.
Why does the rate differ by country for the same HTS code?
The Column 1 rate is the same for every origin with normal trade relations. Trade-remedy duties under Sections 232, 301 and 338 are imposed by origin, by product, or by both, so two shipments of the same article from different countries can carry very different totals.
Is this the rate I will actually pay?
It is the rate that applies to this classification and origin on the date shown. The duty owed on a specific entry also depends on the 10-digit statistical suffix, declared content where a duty is content-based, preference eligibility, and any AD/CVD order in scope.