4-Hydroxybenzoic Acid
4-Hydroxybenzoic acid is a phenolic aromatic monocarboxylic acid used as preservative (paraben precursor) in cosmetics. Falls under HTS 2915.90.20.00 for aromatic monocarboxylic acids.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phenolic function principal characteristic
Phenols with carboxy subordinate classify in 2918 per numerical order rule.
If as aqueous preservative solution
Mixtures for specific use fall outside pure chapter 29 compounds.
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Import Tips & Compliance
• Prop 65 labeling required for California entry if above trace levels
• Distinguish from ester derivatives (parabens) which classify under 2915.90.50
• Include melting point (214°C) specs for authenticity verification
Related Products under HTS 2915.90.20.00
Benzoic Acid
Benzoic acid (C6H5COOH) is an aromatic monocarboxylic acid used as a food preservative, in pharmaceuticals, and as a chemical intermediate. It falls under HTS 2915.90.20.00 as a saturated aromatic monocarboxylic acid, distinct from its derivatives or anhydrides.
o-Toluic Acid
o-Toluic acid (2-methylbenzoic acid) is a substituted aromatic monocarboxylic acid used in synthesis of pharmaceuticals and agrochemicals. Classified under HTS 2915.90.20.00 as an aromatic 'other' saturated monocarboxylic acid.
Phenylacetic Acid
Phenylacetic acid (C6H5CH2COOH) is an aromatic monocarboxylic acid used in penicillin synthesis and as a flavoring agent. Falls under HTS 2915.90.20.00 as a saturated aromatic acid, structurally alpha-toluic acid.
Mandelic Acid
Mandelic acid (hydroxyphenylacetic acid) is an alpha-hydroxy aromatic monocarboxylic acid used in skincare and antibiotics. Classifies under HTS 2915.90.20.00 as aromatic saturated monocarboxylic acid.
Salicylic Acid
Salicylic acid (2-hydroxybenzoic acid) is an aromatic monocarboxylic acid with ortho-hydroxy group, used in acne treatments and aspirin synthesis. Classified in HTS 2915.90.20.00 as aromatic saturated acid.
Naphthoic Acid
1-Naphthoic acid is a bicyclic aromatic monocarboxylic acid used in dye intermediates and pharmaceuticals. Under HTS 2915.90.20.00 as other aromatic monocarboxylic acid.