Other
Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives: > Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: > Other: > Aromatic: > Other: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Products classified under HTS 2918.19.31.00
Salicylic Acid
Salicylic acid is an aromatic carboxylic acid with a hydroxyl group (-OH) attached to the benzene ring, making it a carboxylic acid with alcohol function but no other oxygen functions. It falls under HTS 2918.19.31.00 as an aromatic compound in this category, used primarily in skincare and pharmaceutical applications. This classification follows chapter notes prioritizing the alcohol function in aromatic carboxylic acids.
Mandelic Acid
Mandelic acid (alpha-hydroxyphenylacetic acid) is an aromatic alpha-hydroxy acid with a single -OH group on the alpha carbon, qualifying as a carboxylic acid with alcohol function. Classified under HTS 2918.19.31.00 as 'other' aromatic acids without additional oxygen functions beyond the alcohol. Used in chemical synthesis and skincare for exfoliation.
4-Hydroxybenzoic Acid
4-Hydroxybenzoic acid features a carboxylic acid and phenolic hydroxyl group on a benzene ring, classified as aromatic carboxylic acid with alcohol function. HTS 2918.19.31.00 covers this 'other' category for compounds without further oxygen functions. Widely used as a preservative precursor in cosmetics and food.
Vanillic Acid
Vanillic acid (4-hydroxy-3-methoxybenzoic acid) has a phenolic -OH and methoxy group but is classified by its primary carboxylic acid with alcohol function. Fits HTS 2918.19.31.00 as aromatic 'other' per chapter note prioritizing alcohol function. Used in flavorings, pharmaceuticals, and antioxidants.
Homovanillic Acid
Homovanillic acid (4-hydroxy-3-methoxyphenylacetic acid) is an aromatic carboxylic acid with phenolic alcohol function, no additional oxygen beyond heading scope. HTS 2918.19.31.00 applies to this 'other' aromatic compound, common in biochemical research and neurotransmitter metabolite analysis.
Gentisic Acid
Gentisic acid (2,5-dihydroxybenzoic acid) possesses two phenolic -OH groups but classified under single alcohol function for tariff purposes in aromatic carboxylic acids. HTS 2918.19.31.00 as 'other'; used in analgesics and antioxidants.
Protocatechuic Acid
Protocatechuic acid (3,4-dihydroxybenzoic acid) is an aromatic compound with carboxylic acid and two adjacent phenolic hydroxyls, fitting 'alcohol function' category. Classified in HTS 2918.19.31.00; natural metabolite used in supplements.
Gallic Acid
Gallic acid (3,4,5-trihydroxybenzoic acid) features multiple phenolic -OH but classified as aromatic carboxylic with alcohol function. HTS 2918.19.31.00; used in inks, tanning, and antioxidants.
Syringic Acid
Syringic acid (4-hydroxy-3,5-dimethoxybenzoic acid) has phenolic alcohol with methoxy substituents, under alcohol function heading. HTS 2918.19.31.00 aromatic other.
Ellagic Acid
Ellagic acid, a dilactone of gallic acid, classified by core carboxylic-alcohol function in aromatic series. HTS 2918.19.31.00; used in supplements.
Hydroxyphenylacetic Acid
3-Hydroxyphenylacetic acid is aromatic phenylacetic with phenolic -OH, fitting heading. HTS 2918.19.31.00.
p-Coumaric Acid
p-Coumaric acid (4-hydroxycinnamic acid) unsaturated aromatic hydroxy acid. HTS 2918.19.31.00.
Ferulic Acid
Ferulic acid (4-hydroxy-3-methoxycinnamic acid) phenolic cinnamic derivative. HTS 2918.19.31.00.
Sinapic Acid
Sinapic acid (4-hydroxy-3,5-dimethoxycinnamic) aromatic alcohol-function acid. HTS 2918.19.31.00.
Caffeic Acid
Caffeic acid (3,4-dihydroxycinnamic acid) dihydroxy aromatic acid. HTS 2918.19.31.00.