Other

2907.22.00Hydroquinone (quinol) and its salts

2907.23.004,4'-Isopropylidenediphenol (bisphenol A, diphenylolpropane) and its salts

2907.29.00Other

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Products classified under Tariff item 2907.2

Pharmaceutical Grade Resorcinol USP

Pharmaceutical Grade Resorcinol USP is a high-purity form of resorcinol (1,3-dihydroxybenzene) conforming to United States Pharmacopeia standards. It is a separate chemically defined organic compound used primarily as an antiseptic and keratolytic agent in dermatological preparations. This product falls under tariff item 2907.21.00 as resorcinol and its salts, regardless of its medicinal grade.

Resorcinol (1,3-Dihydroxybenzene)

Resorcinol (1,3-Dihydroxybenzene) is a white crystalline solid with two hydroxyl groups attached to a benzene ring at the 1 and 3 positions, making it a polyphenol. As a separate chemically defined organic compound, it is classified under tariff item 2907.21.00, which covers resorcinol and its salts. This product is used in various industrial and pharmaceutical applications.

Resorcinol for Rubber Vulcanization

Resorcinol for Rubber Vulcanization is a technical-grade resorcinol used as a tackifier and bonding agent in rubber tire manufacturing. It meets industrial purity standards for crosslinking in synthetic rubber compounds. As resorcinol itself, it is classified under tariff item 2907.21.00, which covers resorcinol and its salts, regardless of its intended industrial application.

Resorcinol for UV Absorber Synthesis

Resorcinol for UV Absorber Synthesis is a high-purity resorcinol used as an intermediate in the production of benzotriazole UV absorbers for plastics. It meets specifications for polymer additive manufacturing. This product is classified under tariff item 2907.21.00 as resorcinol, a separate chemically defined organic compound, even though its end use is as a chemical intermediate.

Resorcinol Sodium Salt

Resorcinol Sodium Salt is the sodium salt of resorcinol, a water-soluble compound used as an intermediate in pharmaceutical manufacturing. Tariff item 2907.21.00 explicitly covers resorcinol and its salts, making this product classifiable under this item. As an inorganic salt of an organic compound, it is classified with the parent organic compound per Chapter 29 note 5(C).

Resorcinol with Stabilizer for Transport

Resorcinol with Stabilizer for Transport contains resorcinol with added stabilizers necessary for preservation during transport, such as anti-oxidants. Chapter 29 note 1(f) permits such additions when they are necessary for preservation or transport and do not render the product particularly suitable for specific use. This product remains classified under tariff item 2907.21.00 as resorcinol.

4-Methoxyphenol (Hydroquinone Monomethyl Ether Technical Grade)

Technical grade 4-methoxyphenol, a hydroquinone derivative (monomethyl ether), used as an intermediate in chemical synthesis. It is a separate chemically defined organic compound, but as a derivative of hydroquinone, it falls under tariff item 2907.22.00 per subheading note 1, provided it is not more specifically covered elsewhere.

Adox Hydroquinone for Analog Photography

Photographic grade hydroquinone (1,4-dihydroxybenzene) supplied as a separate chemically defined organic compound for use in film developers. It falls under tariff item 2907.22.00 as a polyphenol (quinol) meeting Chapter 29 Note 1(a) purity criteria.

Agfa Photographic Hydroquinone Powder

Fine powder hydroquinone of photographic specification, a separate chemically defined polyphenol used in motion picture film developers. It is classifiable under tariff item 2907.22.00 per Chapter 29 Note 1(a), as it contains no added substances beyond permitted impurities.

FujiFilm Hydroquinone Super Fine Crystals

Ultra-fine crystal hydroquinone engineered for rapid dissolution in photographic developers, meeting the definition of a separate chemically defined polyphenol. It is classified under tariff item 2907.22.00 as hydroquinone (quinol) per Chapter 29 Note 1(a).

Hydroquinone Monomethyl Ether (HQMME)

Hydroquinone monomethyl ether (HQMME), a substituted polyphenol derivative used as a polymerization inhibitor. It is classifiable under tariff item 2907.22.00 as a derivative of hydroquinone, per subheading note 1, unless more specifically covered by another heading.

Hydroquinone Technical Grade 99%

Technical grade hydroquinone with 99% purity, suitable for industrial applications such as photographic developers and rubber antioxidants. It is a separate chemically defined polyphenol, classifiable under tariff item 2907.22.00 per Chapter 29 Note 1(a).

Hydroquinone USP Grade

Hydroquinone USP grade, a high-purity polyphenol meeting United States Pharmacopeia standards for pharmaceutical applications. It is a separate chemically defined compound, classifiable under tariff item 2907.22.00 per Chapter 29 Note 1(a), unless put up for retail sale as a medicament.

Hydroquinone USP Photographic Grade

High-purity hydroquinone (1,4-dihydroxybenzene) refined for photographic applications, meeting USP standards. It is a separate chemically defined polyphenol classifiable under tariff item 2907.22.00, with impurities within acceptable limits per Chapter 29 Note 1(a).

Hydroquinone with Stabilizer (0.02% NaOH)

Hydroquinone containing 0.02% sodium hydroxide as a stabilizer to prevent oxidation during transport. The added stabilizer is necessary for preservation, consistent with Chapter 29 Note 1(f), so it remains classifiable under tariff item 2907.22.00.

Ilford Hydroquinone for Black & White Developers

Premium photographic grade hydroquinone crystals from Ilford, optimized for high-contrast black-and-white film processing. As a separate chemically defined polyphenol, it is classified under tariff item 2907.22.00 per Chapter 29 Note 1(a).

Kodak Hydroquinone Photographic Crystals

Crystalline hydroquinone produced to photographic standards for professional film development. It is a separate chemically defined polyphenol, classifiable under tariff item 2907.22.00 as hydroquinone (quinol) per Chapter 29 Note 1(a).

Potassium Hydroquinone Disulfonate

Potassium hydroquinone disulfonate, an inorganic salt of hydroquinone, used in photographic processing. Per Chapter 29 Note 5(C), salts of organic compounds are classified with the organic compound, so it falls under tariff item 2907.22.00 as a salt of hydroquinone.

Pure Hydroquinone Monohydrate Photographic

Hydrated form of photographic grade hydroquinone (C6H4(OH)2·H2O), stable for shipping. The water of hydration does not alter its classification as hydroquinone under tariff item 2907.22.00, consistent with Chapter 29 Note 1(d) for products dissolved in water.

Tetenal Hydroquinone Photo Grade Powder

Tetenal's premium powder hydroquinone meeting DIN photographic standards for professional darkroom use. It is a separate chemically defined polyphenol, classifiable under tariff item 2907.22.00 per Chapter 29 Note 1(a).

Bisphenol A (BPA)

Bisphenol A (BPA), also known as 4,4'-Isopropylidenediphenol, is a synthetic organic compound primarily used in the production of polycarbonate plastics and epoxy resins. It is a separate chemically defined organic compound, falling under tariff item 2907.23.00 as specified in the Customs Tariff of Canada.

Bisphenol A Flake Form

Bisphenol A in flake form is the same chemical compound, 4,4'-Isopropylidenediphenol, presented as solid flakes for ease of handling in epoxy resin production. The physical form does not alter its classification under tariff item 2907.23.00, as it remains a separate chemically defined organic compound.

Bisphenol A Technical Grade 99%

Technical grade Bisphenol A with 99% purity is 4,4'-Isopropylidenediphenol, a high-volume industrial chemical used in polycarbonate sheets and epoxy coatings. It qualifies as a separate chemically defined organic compound under chapter note 1(a), even with minor impurities, and is classified under tariff item 2907.23.00.

Bisphenol A with Stabilizer

Bisphenol A with added oxidation stabilizer is still 4,4'-Isopropylidenediphenol, where the stabilizer is necessary for preservation during transport. Under chapter note 1(f), such additions do not change classification, so it remains under tariff item 2907.23.00.

Diphenylolpropane (BPA Alternative Name)

Diphenylolpropane is an alternative name for 4,4'-Isopropylidenediphenol, also known as Bisphenol A. The product is the same chemical compound, and its classification under tariff item 2907.23.00 is based on its chemical identity, not the name used in documentation.

High-Purity Bisphenol A for Polycarbonate

High-purity Bisphenol A at 99.9% purity is 4,4'-Isopropylidenediphenol, produced for optical-grade polycarbonate manufacturing. As a separate chemically defined organic compound, it is classified under tariff item 2907.23.00, with purity not affecting its tariff classification.

Sodium Salt of Bisphenol A

Sodium salt of Bisphenol A is a salt of 4,4'-Isopropylidenediphenol, explicitly covered by the tariff item description 'and its salts.' It is classified under tariff item 2907.23.00, as salts of the specified compound are included in the subheading.

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.