4-Hydroxybenzoic Acid
4-Hydroxybenzoic acid is an aromatic monocarboxylic acid with a hydroxyl group on the benzene ring, classified under HTS 2916.39.46.00 as a product described in additional U.S. note 3 to section VI. It is commonly used as a preservative in cosmetics, pharmaceuticals, and food products due to its antimicrobial properties.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when esterified with alcohols
Esters of phenolic acids like methylparaben (4-hydroxybenzoic acid methyl ester) classify under carboxylic acid esters heading 2918.
If sold as a mixture with other vitamins or derivatives
Vitamin P related compounds may fall under heading 2936 for other vitamins and provitamins.
If imported as aqueous solution exceeding 30% concentration
Solutions not qualifying under chapter 29 note (e)(d) classify as chemical preparations in chapter 38.
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Import Tips & Compliance
• Verify purity certificate (typically ≥99%) as required by additional U.S. note 3 to section VI for chemical classification
• Include Material Safety Data Sheet (MSDS) and ensure proper Hazard Class labeling for UN 2443
• Confirm CAS number 99-96-7 on all documentation to avoid reclassification
Related Products under HTS 2916.39.46.00
3-Hydroxybenzoic Acid (M-Hydroxybenzoic Acid)
Meta-hydroxybenzoic acid is a cyclic aromatic monocarboxylic acid listed in additional U.S. note 3 to section VI, falling under HTS 2916.39.46.00. It serves as an intermediate in pharmaceutical synthesis and organic chemical production.
Salicylic Acid USP Grade
Salicylic acid (2-hydroxybenzoic acid) is an aromatic monocarboxylic acid specifically described in additional U.S. note 3 to section VI, imported under HTS 2916.39.46.00. Widely used in skincare products, acne treatments, and as a pharmaceutical intermediate.
Gentisic Acid (2,5-Dihydroxybenzoic Acid)
Gentisic acid, an aromatic dihydroxy monocarboxylic acid, qualifies under HTS 2916.39.46.00 per additional U.S. note 3 to section VI. Used as an analytical reagent, pharmaceutical intermediate, and antioxidant in formulations.
Gallic Acid
Gallic acid (3,4,5-trihydroxybenzoic acid) is a chemically defined aromatic monocarboxylic acid covered by additional U.S. note 3 to section VI, classifying under HTS 2916.39.46.00. Essential for ink manufacturing, tanning agents, and antioxidant applications.
Protocatechuic Acid
Protocatechuic acid (3,4-dihydroxybenzoic acid) is a pure aromatic monocarboxylic acid specified in additional U.S. note 3, imported under HTS 2916.39.46.00. Used in biochemical research and as a pharmaceutical synthesis intermediate.
Vanillic Acid
Vanillic acid (4-hydroxy-3-methoxybenzoic acid) qualifies as an aromatic monocarboxylic acid under additional U.S. note 3 to section VI and HTS 2916.39.46.00. Applied in flavorings, fragrances, and pharmaceutical intermediates.