Other
Phenols; phenol-alcohols: > Polyphenols; phenol-alcohols: > Other: > Other
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2907.29.90.00
Resorcinol (1,3-Benzenediol)
Resorcinol is a dihydroxybenzene (polyphenol) used in the production of resins, dyes, and pharmaceuticals. It falls under HTS 2907.29.90.00 as a polyphenolic compound that is chemically defined and not specifically provided for elsewhere in heading 2907. This white crystalline solid is a key intermediate in organic synthesis.
Hydroquinone (1,4-Benzenediol)
Hydroquinone is a polyphenol used as a photographic developer, antioxidant, and in skin lightening products. Classified under HTS 2907.29.90.00 as 'other' polyphenols, it features two hydroxyl groups on a benzene ring. This compound requires careful handling due to its oxidizing properties.
Pyrogallol (1,2,3-Benzenetriol)
Pyrogallol is a trihydroxybenzene (polyphenol) used in analytical chemistry, hair dyes, and as a reducing agent. It qualifies for HTS 2907.29.90.00 as a polyphenol not elsewhere specified, distinguished by three phenolic hydroxyl groups. This highly reactive compound requires stabilization for commercial transport.
Phloroglucinol (1,3,5-Benzenetriol)
Phloroglucinol is a symmetrical triphenol used in pharmaceuticals, explosives, and as a reagent for phloroglucinol test. Under HTS 2907.29.90.00 as 'other' polyphenols, it features three hydroxyl groups meta-positioned on benzene. Primarily supplied as dihydrate for stability.
Catechol (1,2-Benzenediol)
Catechol, also known as pyrocatechol, is a dihydric phenol used in photography, dyes, and antioxidants. Classified in HTS 2907.29.90.00 as other polyphenols, it has adjacent hydroxyl groups on benzene ring. Industrial applications include rubber antioxidants and electroplating.
Guaiacol (2-Methoxyphenol)
Guaiacol is a methyl ether of catechol used as expectorant, flavoring agent, and in resins. Falls under HTS 2907.29.90.00 as phenol derivative (phenol-alcohol per hierarchy), though technically monophenolic with methoxy group. Extracted from wood creosote or synthesized.
Gallic Acid (3,4,5-Trihydroxybenzoic Acid)
Gallic acid is a trihydroxybenzoic acid polyphenol used in inks, pharmaceuticals, and as antioxidant. Classified under HTS 2907.29.90.00 as polyphenol though technically carboxylic acid; phenolic functions dominate classification. Occurs naturally in plants, commercially synthesized.
Ellagic Acid
Ellagic acid is a natural polyphenol dilactone used in pharmaceuticals and cosmetics for antioxidant properties. Under HTS 2907.29.90.00 as other polyphenol; derived from ellagitannins hydrolysis. Features four phenolic hydroxyl groups in dilactone structure.
Rutin (Quercetin-3-rutinoside)
Rutin is a flavonoid glycoside containing quercetin polyphenol moiety, used as antioxidant and capillary protectant. Classified HTS 2907.29.90.00 as polyphenol derivative despite glycoside; phenolic rings determine classification. Extracted from buckwheat and citrus.
Nordihydroguaiaretic Acid (NDGA)
NDGA is a potent antioxidant polyphenol from creosote bush used in food preservation and pharmaceuticals. HTS 2907.29.90.00 covers this tetraphenolic lignan as 'other' polyphenol. Synthetic versions also commercially available.