Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
62 declarable lines
Heading 2918 covers carboxylic acids that carry an additional oxygen function, together with their anhydrides, halides, peroxides, peroxyacids and halogenated, sulfonated, nitrated or nitrosated derivatives. The heading is split first by the type of extra oxygen function: alcohol only (2918.11 through 2918.19), phenol only (2918.21 through 2918.29), aldehyde or ketone only (2918.30), and a residual group (2918.91 through 2918.99). Within each group, lines run from named compounds to baskets for aromatic and other products, with separate lines for pesticides, drugs, and odoriferous or flavoring compounds.
Products in this heading
- Citric acid
- Lactic acid
- Tartaric acid and cream of tartar (potassium bitartrate)
- Aspirin (O-acetylsalicylic acid)
- Sodium citrate
- Gluconic acid and sodium gluconate
- Salicylic acid
- Malic acid
How to choose the right subheading
- Identify the oxygen function present in addition to the carboxyl group: alcohol, phenol, aldehyde or ketone, or none of these.
- Decide whether the compound is aromatic or non-aromatic, since each group splits along that line.
- Check whether the legal text names the specific compound, such as citric acid, salicylic acid or mandelic acid, before using a basket line.
- Determine whether the goods are the acid itself, or a salt or ester of it, because these often sit on separate lines.
- Check for use-based lines such as pesticides, drugs, or odoriferous or flavoring compounds, which can override the general basket.
Often confused with
- Heading 2915Acetic acid and vinegar
Saturated acyclic monocarboxylic acids without an additional oxygen function go to 2915.
- Heading 2917Oxalic acid
Polycarboxylic acids are classified in 2917, not as acids with an added oxygen function.
- Heading 2916Benzoic acid and sodium benzoate
Cyclic monocarboxylic acids without another oxygen function fall in 2916.
- Heading 2905Sorbitol
Sorbitol is an acyclic alcohol and is provided for in 2905, not as a carboxylic acid.
- Heading 2936Ascorbic acid (vitamin C)
Vitamins and their derivatives used primarily as vitamins are classified in 2936.
Frequently asked questions
What is the HTS code for citric acid?
Citric acid is classified under 2918.14.00.00, with a general (MFN) rate of 6%.
What is the duty on aspirin?
O-Acetylsalicylic acid (Aspirin) falls under 2918.22.10.00 and carries a general (MFN) rate of 6.5%.
How do I classify cream of tartar?
Potassium bitartrate (Cream of tartar) is provided for under 2918.13.20.00 and is Free at the general (MFN) rate. Other salts and esters of tartaric acid that are not named separately go under 2918.13.50.00 at 4.4%.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.
All lines in heading 2918
- 2918.11.10.00Lactic acid, its salts and esters / Lactic acid5.1%
- 2918.11.51.00Lactic acid, its salts and esters / Other3.4%
- 2918.12.00.00Tartaric acidFree
- 2918.13.10.00Potassium antimony tartrate (Tartar emetic)Free
- 2918.13.20.00Potassium bitartrate (Cream of tartar)Free
- 2918.13.30.00Potassium sodium tartrate (Rochelle salts)Free
- 2918.13.50.00Salts and esters of tartaric acid / Other4.4%
- 2918.14.00.00Citric acid6%
- 2918.15.10.00Salts and esters of citric acid / Sodium citrate6.5%
- 2918.15.50.00Salts and esters of citric acid / Other3.7%
- 2918.16.10.00Gluconic acid, its salts and esters / Gluconic acid6%
- 2918.16.50.10Gluconic acid, its salts and esters / Sodium gluconate3.7%
- 2918.16.50.20Gluconic acid, its salts and esters / Calcium gluconate3.7%
- 2918.16.50.90Gluconic acid, its salts and esters / Other3.7%
- 2918.17.00.012,2-Diphenyl-2-hydroxyacetic acid (benzilic acid)5.8%
- 2918.18.00.00Chlorobenzilate (ISO)6.5%
- 2918.19.11.00Aromatic / Benzilic acid, methyl ester5.8%
- 2918.19.12.00Phenylglycolic acid (Mandelic acid), its salts and esters / Mandelic acidFree
- 2918.19.15.00Phenylglycolic acid (Mandelic acid), its salts and esters / Other6.5%
- 2918.19.20.00Products described in additional U.S. note 3 to section VI6.5%
- 2918.19.31.00Aromatic / Other6.5%
- 2918.19.60.00Malic acid4%
- 2918.19.90.00Other4%
- 2918.21.10.00Salicylic acid and its salts / Suitable for medicinal use6.5%
- 2918.21.50.00Salicylic acid and its salts / Other6.5%
- 2918.22.10.00O-Acetylsalicylic acid (Aspirin)6.5%
- 2918.22.50.00Salts and esters of O-acetylsalicylic acid6.5%
- 2918.23.10.00Salol (Phenyl salicylate) suitable for medicinal use6.5%
- 2918.23.20.00Odoriferous or flavoring compounds6.5%
- 2918.23.30.00Products described in additional U.S. note 3 to section VI6.5%
- 2918.23.50.00Other6.5%
- 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%
- 2918.29.06.001,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate)5.8%
- 2918.29.08.00m-Hydroxybenzoic acidFree
- 2918.29.20.00Gentisic acid; and Hydroxycinnamic acid and its salts6.5%
- 2918.29.22.00p-Hydroxybenzoic acid6.5%
- 2918.29.25.003-Hydroxy-2-naphthoic acid6.5%
- 2918.29.30.00Gallic acid1%
- 2918.29.39.004,4-Bis(4-hydroxyphenyl) pentanoic acid; and 3,5,6-Trichlorosalicylic acidFree
- 2918.29.65.00Products described in additional U.S. note 3 to section VI6.5%
- 2918.29.75.00Other6.5%
- 2918.30.10.001-Formylphenylacetic acid, methyl ester5.8%
- 2918.30.15.002-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoateFree
- 2918.30.25.10Methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)6.5%
- 2918.30.25.50Products described in additional U.S. note 3 to section VI / Other6.5%
- 2918.30.30.00Aromatic / Other6.5%
- 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
- 2918.30.90.00Other3.7%
- 2918.91.00.002,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts and esters6.5%
- 2918.99.05.00p-Anisic acid; Clofibrate; and 3-Phenoxybenzoic acid5.8%
- 2918.99.06.001-Hydroxy-6-octadecyloxy-2-naphthalene- carboxylic acid; and 1-Hydroxy-6-docosyloxy-2-naphthalene- carboxylic acidFree
- 2918.99.14.002-(4-Chloro-2-methylphenoxy)propionic acid and its saltsFree
- 2918.99.18.004-(4-Chloro-2-methylphenoxy) butyric acid;p-Chlorophenoxyacetic acid; and 2-(2,4-Dichlorophenoxy) propionic acid6.5%
- 2918.99.20.102,4-Dichlorophenoxyacetic acid, its salts and esters6.5%
- 2918.99.20.152-Methyl-4-chlorophenoxyacetic acid6.5%
- 2918.99.20.50Aromatic / Pesticides / Other6.5%
- 2918.99.30.00Aromatic / Drugs6.5%
- 2918.99.35.00Odoriferous or flavoring compounds6.5%
- 2918.99.43.102-Methyl-3-phenyloxirane-2-carboxylic acid (P-2-P methyl glycidic acid), its salts and esters6.5%
- 2918.99.43.50Products described in additional U.S. note 3 to section VI / Other6.5%
- 2918.99.47.00Aromatic / Other6.5%
- 2918.99.50.00Other4%