Heading 2918: Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides…
Every line of heading 2918 in the U.S. Harmonized Tariff Schedule, with its general (column 1) duty rate. Open a code for the landed cost calculator, trade agreement rates and email alerts if the rate changes.
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
Chapter 29: Organic chemicals. Schedule checked on November 8, 2026.
Not always the total: additional chapter 99 duties (such as Section 232 or Section 301), antidumping or countervailing duties may apply depending on the country of origin. See recent chapter 99 changes →
Tariff lines
| HTS code | Official description | General rate |
|---|---|---|
| 2918.11 | Lactic acid, its salts and esters: | |
| 2918.11.10.00 | Lactic acid | 5.1% |
| 2918.11.51.00 | Other | 3.4% |
| 2918.12.00.00 | Tartaric acid | Free |
| 2918.13 | Salts and esters of tartaric acid: | |
| 2918.13.10.00 | Potassium antimony tartrate (Tartar emetic) | Free |
| 2918.13.20.00 | Potassium bitartrate (Cream of tartar) | Free |
| 2918.13.30.00 | Potassium sodium tartrate (Rochelle salts) | Free |
| 2918.13.50.00 | Other | 4.4% |
| 2918.14.00.00 | Citric acid | 6% |
| 2918.15 | Salts and esters of citric acid: | |
| 2918.15.10.00 | Sodium citrate | 6.5% |
| 2918.15.50.00 | Other | 3.7% |
| 2918.16 | Gluconic acid, its salts and esters: | |
| 2918.16.10.00 | Gluconic acid | 6% |
| 2918.16.50 | Other | 3.7% |
| 2918.16.50.10 | Sodium gluconate | |
| 2918.16.50.20 | Calcium gluconate | |
| 2918.16.50.90 | Other | |
| 2918.17.00.01 | 2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid) | 5.8% |
| 2918.18.00.00 | Chlorobenzilate (ISO) | 6.5% |
| 2918.19 | Other: | |
| 2918.19.11.00 | Benzilic acid, methyl ester | 5.8% |
| 2918.19.12.00 | Mandelic acid | Free |
| 2918.19.15.00 | Other | 6.5% |
| 2918.19.20.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2918.19.31.00 | Other | 6.5% |
| 2918.19.60.00 | Malic acid | 4% |
| 2918.19.90.00 | Other | 4% |
| 2918.21 | Salicylic acid and its salts: | |
| 2918.21.10.00 | Suitable for medicinal use | 6.5% |
| 2918.21.50.00 | Other | 6.5% |
| 2918.22 | O-Acetylsalicylic acid, its salts and esters: | |
| 2918.22.10.00 | O-Acetylsalicylic acid (Aspirin) | 6.5% |
| 2918.22.50.00 | Salts and esters of O-acetylsalicylic acid | 6.5% |
| 2918.23 | Other esters of salicylic acid and their salts: | |
| 2918.23.10.00 | Salol (Phenyl salicylate) suitable for medicinal use | 6.5% |
| 2918.23.20.00 | Odoriferous or flavoring compounds | 6.5% |
| 2918.23.30.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2918.23.50.00 | Other | 6.5% |
| 2918.29 | Other: | |
| 2918.29.04.00 | 2,3-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 acid | 5.8% |
| 2918.29.06.00 | 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate) | 5.8% |
| 2918.29.08.00 | m-Hydroxybenzoic acid | Free |
| 2918.29.20.00 | Gentisic acid; and Hydroxycinnamic acid and its salts | 6.5% |
| 2918.29.22.00 | p-Hydroxybenzoic acid | 6.5% |
| 2918.29.25.00 | 3-Hydroxy-2-naphthoic acid | 6.5% |
| 2918.29.30.00 | Gallic acid | 1% |
| 2918.29.39.00 | 4,4-Bis(4-hydroxyphenyl) pentanoic acid; and 3,5,6-Trichlorosalicylic acid | Free |
| 2918.29.65.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2918.29.75.00 | Other | 6.5% |
| 2918.30 | Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: | |
| 2918.30.10.00 | 1-Formylphenylacetic acid, methyl ester | 5.8% |
| 2918.30.15.00 | 2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate | Free |
| 2918.30.25 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2918.30.25.10 | Methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA) | |
| 2918.30.25.50 | Other | |
| 2918.30.30.00 | Other | 6.5% |
| 2918.30.70.00 | Dimethyl 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 ester | Free |
| 2918.30.90.00 | Other | 3.7% |
| 2918.91.00.00 | 2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters | 6.5% |
| 2918.99 | Other: | |
| 2918.99.05.00 | p-Anisic acid; Clofibrate; and 3-Phenoxybenzoic acid | 5.8% |
| 2918.99.06.00 | 1-Hydroxy-6-octadecyloxy-2-naphthalene- carboxylic acid; and 1-Hydroxy-6-docosyloxy-2-naphthalene- carboxylic acid | Free |
| 2918.99.14.00 | 2-(4-Chloro-2-methylphenoxy)propionic acid and its salts | Free |
| 2918.99.18.00 | 4-(4-Chloro-2-methylphenoxy) butyric acid;p-Chlorophenoxyacetic acid; and 2-(2,4-Dichlorophenoxy) propionic acid | 6.5% |
| 2918.99.20 | Other | 6.5% |
| 2918.99.20.10 | 2,4-Dichlorophenoxyacetic acid, its salts and esters | |
| 2918.99.20.15 | 2-Methyl-4-chlorophenoxyacetic acid | |
| 2918.99.20.50 | Other | |
| 2918.99.30.00 | Drugs | 6.5% |
| 2918.99.35.00 | Odoriferous or flavoring compounds | 6.5% |
| 2918.99.43 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2918.99.43.10 | 2-Methyl-3-phenyloxirane-2-carboxylic acid (P-2-P methyl glycidic acid), its salts and esters | |
| 2918.99.43.50 | Other | |
| 2918.99.47.00 | Other | 6.5% |
| 2918.99.50.00 | Other | 4% |
Public records · unclaimed listings
U.S. manufacturers in this industry, from public records
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- BEDOUKIAN RESEARCH, INC.
- EMBALMERS' SUPPLY COMPANY, THE
- FMI CHEMICAL, INC.
- HAMPFORD RESEARCH, INC.
- KING INDUSTRIES, INC.
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Exporting this product from the U.S.?
Exports are reported with Schedule B numbers. Heading 2918 has 23 of them; the first 12 are below. Schedule B lookup →
- 2918.11.0002LACTIC ACID, ITS SALTS AND ESTERS
- 2918.12.0000TARTARIC ACID (DIHYDROXYSUCCINIC ACID)
- 2918.13.0000SALTS AND ESTERS OF TARTARIC ACID
- 2918.14.0000CITRIC ACID (2-HYDROXY-1,2,3-PROPANETRICARBOXYLIC ACID)
- 2918.15.0000SALTS AND ESTERS OF CITRIC ACID
- 2918.16.0000GLUCONIC ACID, ITS SALTS AND ESTERS
- 2918.17.00012,2-DIPHENYL-2-HYDROXYACETIC ACID (BENZILIC ACID)
- 2918.18.0000CHLOROBENZILATE (ISO)
- 2918.19.1350PHENYLGLYCOLIC ACID (MANDELIC ACID) ITS SALTS AND ESTERS
- 2918.19.5000CARBOXYLIC ACIDS W/ ALCOHOL FUNCTION BUT W/O OTHER OXYGEN FUNCTION AND THEIR DERIVATIVES, NESOI
- 2918.21.1000SALICYLIC ACID AND ITS SALTS SUITABLE FOR MEDICINAL USE
- 2918.21.5100SALICYLIC ACID AND ITS SALTS (EXCLUDING MEDICINAL USE)
Source: U.S. International Trade Commission, Harmonized Tariff Schedule; Schedule B: U.S. Census Bureau. Information only, not legal or customs advice; U.S. Customs and Border Protection decides the classification and the duty. Confirm with a licensed customs broker before you ship.
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