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Phenols; phenol-alcohols. > Polyphenols; phenol-alcohols: > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2907.29.00
1-Naphthol
1-Naphthol is a monohydric phenol derived from naphthalene, featuring a hydroxyl group on one ring. It is a chemically defined organic compound used primarily as an intermediate in the production of azo dyes and pesticides, falling under the polyphenols; phenol-alcohols heading as 'Other'.
2-Naphthol
2-Naphthol (β-naphthol) is a monohydric naphthol with a hydroxyl group on the second carbon of the naphthalene ring. It is a chemically defined organic compound used as a key intermediate for azo dyes, rubber antioxidants, and pharmaceuticals, classified under the 'Other' polyphenols; phenol-alcohols subheading.
2-Phenylethanol
2-Phenylethanol is a phenol-alcohol consisting of a phenyl ring attached to an ethanol chain, making it a chemically defined organic compound. It is widely used as a fragrance in perfumes and as a rose oil substitute, and falls under the 'Other' polyphenols; phenol-alcohols subheading due to its phenolic and alcoholic hydroxyl groups.
4,4'-Biphenol (CAS 92-88-6)
4,4'-Biphenol is a polyphenolic compound consisting of two hydroxyphenyl groups linked by a biphenyl bond. It is a chemically defined organic compound used primarily in polymer production, antioxidants, and liquid crystal materials, classified under the 'Other' polyphenols; phenol-alcohols subheading.
4,4'-Biphenol Technical Grade Powder
Technical grade 4,4'-Biphenol powder (98-99% purity) is a chemically defined polyphenol used in antioxidant formulations and liquid crystal production. It is a separate chemically defined organic compound, falling under the 'Other' polyphenols; phenol-alcohols subheading.
4,4'-Dihydroxybiphenyl Crystals
4,4'-Dihydroxybiphenyl, also known as 4,4'-Biphenol, is a chemically defined bis-phenol with two hydroxyl groups on a biphenyl structure. It is used in epoxy resin hardeners and polymer production, classified under the 'Other' polyphenols; phenol-alcohols subheading.
4-Methoxyphenol (Methoxyhydroquinone)
4-Methoxyphenol, also known as mequinol, is a phenol-alcohol with methoxy and hydroxy substituents on a benzene ring. It is a chemically defined organic compound used in polymerization inhibitors and skin depigmentation treatments, classified under the 'Other' polyphenols; phenol-alcohols subheading.
Carvacrol
Carvacrol (5-isopropyl-2-methylphenol) is a monoterpenoid phenol-alcohol with antimicrobial properties. It is a chemically defined organic compound used in disinfectants, food preservatives, and natural flavorings, falling under the 'Other' polyphenols; phenol-alcohols subheading.
Catechol (1,2-Benzenediol)
Catechol (1,2-benzenediol), also known as pyrocatechol, is a dihydric phenol used in photography, dyes, and antioxidants. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The adjacent hydroxyl groups on the benzene ring define its chemical identity.
Cosmetic TBHQ Antioxidant Pellets
Cosmetic TBHQ (tert-Butylhydroquinone) antioxidant pellets are a synthetic polyphenolic compound used to inhibit lipid peroxidation in creams, lotions, and lip products. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The pellets are formulated for cosmetic use but remain a general-purpose antioxidant.
Ellagic Acid
Ellagic acid is a natural polyphenol dilactone used in pharmaceuticals and cosmetics for its antioxidant properties. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The product is derived from ellagitannins hydrolysis and features four phenolic groups.
Food-Grade TBHQ (tert-Butylhydroquinone) Crystals
Food-grade TBHQ crystals are a highly purified form of tert-Butylhydroquinone used as an antioxidant in edible oils, shortenings, and baked goods. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The product meets food safety standards for use at levels up to 0.02% in food products.
Gallic Acid (3,4,5-Trihydroxybenzoic Acid)
Gallic acid (3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid polyphenol used in inks, pharmaceuticals, and as an antioxidant. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. Although it contains a carboxylic acid group, the phenolic functions dominate classification.
Guaiacol
Guaiacol (2-methoxyphenol) is a phenol-alcohol with a hydroxyl and a methoxy group on a benzene ring. It is a chemically defined organic compound used as an expectorant, flavoring agent, and in resin production, classified under the 'Other' polyphenols; phenol-alcohols subheading.
Guaiacol (2-Methoxyphenol)
Guaiacol (2-methoxyphenol) is an organic compound consisting of a benzene ring with a hydroxyl group and a methoxy group. It is used as an expectorant in pharmaceuticals, as a flavouring agent, and as an intermediate in resin production. Under the Customs Tariff, it is classified as a polyphenol or phenol-alcohol derivative, falling within the 'Other' tariff item of subheading 2907.29.
High-Purity 4,4'-Biphenol Flakes
High-purity 4,4'-Biphenol in flake form (>99.5% purity) is a key polyphenol monomer for advanced polymer production, including polycarbonate resins and flame retardants. It is a chemically defined organic compound, classified under the 'Other' polyphenols; phenol-alcohols subheading.
Hydroquinone
Hydroquinone (1,4-benzenediol) is a dihydric phenol with two hydroxyl groups on a benzene ring. It is a chemically defined organic compound used in photographic developers, antioxidants, and skin lightening products, falling under the 'Other' polyphenols; phenol-alcohols subheading.
Hydroquinone (1,4-Benzenediol)
Hydroquinone (1,4-benzenediol) is a polyphenol with two hydroxyl groups attached to a benzene ring in para positions. It is widely used as a photographic developer, an antioxidant in industrial processes, and in skin-lightening cosmetic products. As a chemically defined polyphenol not specifically named elsewhere, it is classified under the 'Other' tariff item of subheading 2907.29.
Industrial TBHQ (tert-Butylhydroquinone) Flakes
Industrial-grade TBHQ flakes are used as an antioxidant stabilizer for petroleum products, rubber, and plastics. As a chemically defined polyphenol (tert-Butylhydroquinone), it is classified under tariff item 2907.29.00. The flakes prevent oxidative degradation during storage and processing.
Nordihydroguaiaretic Acid (NDGA)
Nordihydroguaiaretic acid (NDGA) is a polyphenolic lignan with four hydroxyl groups, derived from the creosote bush or produced synthetically. It is used as an antioxidant in food preservation and in pharmaceutical research. As a chemically defined polyphenol not elsewhere specified, it is classified under the 'Other' tariff item of subheading 2907.29.
p-Ethylphenol
p-Ethylphenol (4-ethylphenol) is an alkyl-substituted phenol-alcohol with an ethyl group and a hydroxyl group on a benzene ring. It is a chemically defined organic compound used as an industrial intermediate for resins, pharmaceuticals, and fragrances, classified under the 'Other' polyphenols; phenol-alcohols subheading.
Pharmaceutical-Grade tert-Butylhydroquinone
Pharmaceutical-grade TBHQ is a USP-compliant polyphenolic antioxidant used in drug formulations to protect active ingredients from oxidation. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The product is used in topical creams and injectables.
Phloroglucinol (1,3,5-Benzenetriol)
Phloroglucinol (1,3,5-benzenetriol) is a symmetrical triphenol with three hydroxyl groups on a benzene ring. It is used in pharmaceuticals as an antispasmodic, in the production of explosives, and as a reagent in analytical chemistry. As a chemically defined polyphenol, it falls under the 'Other' tariff item of subheading 2907.29.
Pyrogallic Acid Flakes Industrial Grade
Industrial-grade pyrogallic acid (pyrogallol) in flake form, 90-95% purity, is a chemically defined polyphenol (1,2,3-trihydroxybenzene). The flake presentation reduces dusting during handling, and anti-dusting agents are permitted under Chapter 29 note 1(g) without altering its classification. It falls under tariff item 2907.29.00 as a polyphenol not otherwise specified.
Pyrogallic Acid (Pyrogallol) Powder
Pyrogallic acid (pyrogallol) powder is a chemically defined polyphenol (1,2,3-trihydroxybenzene) appearing as white to yellowish crystalline powder. It is classified under tariff item 2907.29.00 as a polyphenol not otherwise specified. The powder form is standard for laboratory and industrial applications.
Pyrogallol (1,2,3-Benzenetriol)
Pyrogallol (1,2,3-benzenetriol) is a trihydroxybenzene used as a reducing agent in analytical chemistry, in hair dyes, and in photographic developers. It is a chemically defined polyphenol with three adjacent hydroxyl groups. Under the Customs Tariff, it is classified under the 'Other' tariff item of subheading 2907.29 as a polyphenol not elsewhere specified.
Pyrogallol 99%+ ACS Reagent Grade
ACS reagent grade pyrogallol (99%+ purity) is a high-purity polyphenol used in laboratory analysis. As a chemically defined compound, it is classified under tariff item 2907.29.00. The high purity does not affect classification, which is based on chemical identity as 1,2,3-trihydroxybenzene.
Pyrogallol Technical Grade Crystals
Technical grade pyrogallol crystals (C6H3(OH)3) are a chemically defined polyphenol classified under tariff item 2907.29.00. Free-flowing crystals with anti-caking agents are permitted under Chapter 29 note 1(f) for preservation or transport. The product is used in industrial applications such as dye production and gas analysis.
Pyrogallol with Emetic Additive Safety Grade
Safety-grade pyrogallol with an added emetic for identification purposes is classified under tariff item 2907.29.00. Chapter 29 note 1(g) permits emetic additives for safety reasons, provided they do not make the product suitable for a specific use. The chemical identity as 1,2,3-trihydroxybenzene remains unchanged.
Resorcinol (1,3-Benzenediol)
Resorcinol (1,3-benzenediol) is a dihydroxybenzene with two hydroxyl groups in meta positions. It is used in the production of resins, dyes, and pharmaceuticals, and as a chemical intermediate. As a chemically defined polyphenol, it is classified under the 'Other' tariff item of subheading 2907.29.
Resorcinol Monohydrate
Resorcinol monohydrate is a dihydric phenol (1,3-benzenediol) with a water molecule of hydration. It is a chemically defined organic compound used in dyes, pharmaceuticals, and adhesives, falling under the 'Other' polyphenols; phenol-alcohols subheading due to its dual hydroxyl functionality.
Rutin (Quercetin-3-rutinoside)
Rutin (quercetin-3-rutinoside) is a flavonoid glycoside containing a polyphenolic quercetin moiety. It is used as an antioxidant and capillary protectant in pharmaceuticals and dietary supplements. Despite being a glycoside, its phenolic rings determine classification under the 'Other' tariff item of subheading 2907.29 as a polyphenol derivative.
Stabilized 4,4'-Biphenol for Transport
4,4'-Biphenol with added stabilizer for safe transport is a chemically defined polyphenol classified under tariff item 2907.29.00. The stabilizer is permitted under Chapter 29 note 1(f) for preservation or transport. The product is used as an intermediate in polymer production and other industrial applications.
Stabilized Pyrogallol for Photographic Use
Stabilized pyrogallol for photographic use contains sodium carbonate as a stabilizer, permitted under Chapter 29 note 1(f). It is classified under tariff item 2907.29.00 as a chemically defined polyphenol. The stabilizer is necessary for preservation during transport and does not make the product suitable for a specific use.
tert-Butylhydroquinone (TBHQ) Antioxidant Powder
tert-Butylhydroquinone (TBHQ) antioxidant powder is a synthetic phenolic antioxidant used to preserve fats and oils in food products. As a chemically defined polyphenol, it is classified under tariff item 2907.29.00. The powder inhibits oxidation and extends shelf life.
Thymol
Thymol (2-isopropyl-5-methylphenol) is a monoterpenoid phenol-alcohol with antimicrobial properties. It is a chemically defined organic compound used as a natural antiseptic in mouthwashes, pharmaceuticals, and food preservation, classified under the 'Other' polyphenols; phenol-alcohols subheading.
Tyrosol
Tyrosol (4-hydroxyphenethyl alcohol) is a naturally occurring phenol-alcohol with both phenolic and alcoholic hydroxyl groups. It is a chemically defined organic compound found in olive oil, used in antioxidants and pharmaceuticals, falling under the 'Other' polyphenols; phenol-alcohols subheading.