Chapter 2912 — Customs Tariff Headings

2912.2Cyclic aldehydes without other oxygen function:

2912.4Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function:

2912.50.00Cyclic polymers of aldehydes

2912.60.00Paraformaldehyde

Calculate exact duty for your shipment Not sure about classification? Ask the Tariff Assistant

Products classified under Tariff item 29.12

Anhydrous Formaldehyde Gas Cylinders

High-purity anhydrous methanal in pressurized cylinders for industrial chemical synthesis. It is a separate chemically defined acyclic aldehyde, meeting Chapter 29 note (a) criteria.

Bulk Formaldehyde Railcar Grade

Commodity-grade 37% formaldehyde shipped by railcar for particleboard manufacturing. This aqueous solution of methanal qualifies under Chapter 29 note (d) as a product dissolved in water.

Formaldehyde 40% Stabilized Solution (Methanol Stabilized)

A 40% formaldehyde solution stabilized with methanol to prevent polymerization, used in resins and adhesives production. The stabilizer is permitted under Chapter 29 note (f) for preservation or transport.

Formaldehyde Diagnostic Grade Solution

Formaldehyde solution certified for clinical chemistry analyzers and diagnostic kits. The diagnostic certification does not change the chemical classification as methanal under Chapter 29 note (a).

Formaldehyde for Plywood Resin Production

Technical grade formaldehyde solution optimized for phenol-formaldehyde plywood adhesives. Formulation specifications do not override the chemical definition of methanal as an acyclic aldehyde.

Formaldehyde for Urea Resin Synthesis

Pharmaceutical/purity grade formaldehyde specifically for pharmaceutical intermediate synthesis. Intended use does not affect classification; it remains a chemically defined methanal compound.

Formaldehyde Semiconductor Processing Grade

Ultra-high purity formaldehyde for photoresist manufacturing in semiconductor production. It is a chemically defined methanal meeting Chapter 29 requirements for electronic chemical intermediates.

Formaldehyde USP Grade 10% Solution

Pharmaceutical-grade 10% formaldehyde solution meeting USP standards for tissue fixation and embalming. It is a chemically defined methanal solution in water, per Chapter 29 note (d).

Formaldehyde with Anticaking Agent

Methanal solution with added anticaking agent for bulk storage stability. This additive is allowed under Chapter 29 note (f) as a stabilizer necessary for preservation or transport, provided it does not make the product suitable for a specific use.

Formalin Tissue Fixative Solution

Buffered 10% formalin solution specifically formulated for histological tissue preservation in medical labs. The buffer does not constitute another oxygen function, so it remains methanal under Chapter 29.

High Purity Formaldehyde 99% Distilled

Distilled high-purity methanal (99%) for specialty chemical synthesis and electronics. It is a separate chemically defined compound meeting strict Chapter 29 purity standards.

Industrial Formaldehyde 50% Solution

High-concentration 50% aqueous formaldehyde for urea-formaldehyde resin manufacturing. It is a methanal solution per Chapter 29 note (d); concentration does not affect classification.

Methanal (Formaldehyde) 37% Aqueous Solution

A 37% aqueous solution of methanal, commonly known as formalin, used as a disinfectant, preservative, and in chemical synthesis. It is a chemically defined acyclic aldehyde without other oxygen functions.

Stabilized Formaldehyde for Textile Finishing

Formaldehyde solution with proprietary stabilizer for durable press textile finishing. The textile application does not override the chemical definition, and the stabilizer is permitted under Chapter 29 note (f).

Acetaldehyde 99% Pure Industrial Grade

Acetaldehyde (ethanal, CAS 75-07-0) is a colorless, volatile liquid with a pungent fruity odor, presented as a separate chemically defined acyclic aldehyde without other oxygen functions. It is classified under tariff item 2912.12.00 as ethanal, consistent with Chapter 29 Note 1(a). This industrial grade is suitable for various chemical synthesis applications.

Acetaldehyde Anhydrous Technical Grade

Anhydrous technical grade acetaldehyde is a high-purity form of ethanal without water content, directly classifiable under tariff item 2912.12.00 as a separate acyclic aldehyde. It is primarily used in the production of acetic anhydride and other chemical intermediates, meeting Chapter 29 Note 1(a) for chemically defined compounds.

Acetaldehyde Bulk Tanker Grade 98%

98% acetaldehyde suitable for bulk tanker transport in chemical manufacturing is classified under tariff item 2912.12.00 as the chemically defined acyclic aldehyde, allowing minor impurities. It is used in large-scale production of vinyl acetate and other industrial chemicals, consistent with Chapter 29 Note 1(a) for separate chemically defined compounds.

Acetaldehyde for Flavor and Fragrance Synthesis

High-purity acetaldehyde specifically for synthesizing apple, pineapple, and rum flavor compounds is classified under tariff item 2912.12.00 as the pure chemically defined acyclic aldehyde. It meets food-grade precursor standards and is used in flavor and fragrance synthesis, consistent with Chapter 29 Note 1(a).

Acetaldehyde Stabilized with Hydroquinone

Stabilized acetaldehyde contains a small amount of hydroquinone to prevent polymerization during storage and transport, remaining classified under tariff item 2912.12.00 as the pure acyclic aldehyde per Chapter 29 Note 1(f). The stabilizer is added solely for preservation and does not make the product suitable for a specific use.

Acetaldehyde with MEHQ Inhibitor

Acetaldehyde inhibited with 4-methoxyphenol (MEHQ) at 100 ppm to prevent oxidation is classified under tariff item 2912.12.00 per Chapter 29 Note 1(f), which allows added stabilizers necessary for preservation or transport. It is used in polymer and resin industries, and the stabilizer does not render it suitable for a specific use.

Industrial Acetaldehyde in Glass Ampoules

Acetaldehyde packaged in sealed glass ampoules for laboratory and small-scale industrial use is classified under tariff item 2912.12.00 as the pure acyclic aldehyde compound. The packaging is solely for safe transport without altering the product's classification, consistent with Chapter 29 Note 1(a).

Pharma-Grade Acetaldehyde GC Pure

Gas chromatography pure acetaldehyde meeting Ph. Eur. standards for pharmaceutical intermediate use is classified under tariff item 2912.12.00 as pure ethanal. It is an essential precursor for chloramphenicol and other antibiotics, consistent with Chapter 29 Note 1(a) for separate chemically defined compounds.

Research-Grade Acetaldehyde 99.5%

99.5% research-grade acetaldehyde for R&D applications in organic synthesis is classified under tariff item 2912.12.00 as the pure separate acyclic aldehyde. Supplied in 100g-1kg quantities for university and lab use, it meets Chapter 29 Note 1(a) for chemically defined compounds.

2-Ethylhexanal

2-Ethylhexanal, a branched-chain acyclic aldehyde used in producing 2-ethylhexyl acrylate for adhesives and coatings. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. The product is classified as an 'other' acyclic aldehyde.

2-Methylbutanal

2-Methylbutanal is a branched acyclic aldehyde imparting malty, chocolate-like flavors used in beer, chocolate, and nut flavorings. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

2-Methylpropanal Stabilized

2-Methylpropanal stabilized with BHT antioxidant to prevent polymerization during transport and storage. It is a separate chemically defined acyclic aldehyde without other oxygen functions, and the stabilizer is necessary for preservation. Meets Chapter 29 note (f) allowing added stabilizers.

Acetaldehyde

Acetaldehyde (CH3CHO), a simple acyclic aldehyde used primarily in the production of acetic acid, acetic anhydride, and as a precursor for various chemicals. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. Classified as an 'other' acyclic aldehyde.

Beta-Citral (Neral Isomer) Fragrance Grade

Beta-Citral (neral), the Z-isomer of citral, is a separate chemically defined acyclic aldehyde without other oxygen functions. It is isolated for specialized fragrance applications in fine perfumes and aromatherapy oils, and falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Biocide Grade Glyoxal 40% Solution

Glyoxal solution meeting biocide standards for industrial water treatment and disinfectant formulations is a pure acyclic dialdehyde. It falls under tariff item 2912.19.00 as a separate chemically defined compound, excluding formulated end-products per Chapter 29 notes.

Butanal with 0.1% Hydroquinone Stabilizer

Butanal with 0.1% Hydroquinone Stabilizer is normal butanal stabilized to prevent polymerization during storage and transport. The stabilizer is necessary for preservation per Chapter 29 note (f), so it remains classified as a separate chemically defined acyclic aldehyde under tariff item 2912.19.00 as 'Other'.

Butyraldehyde

Butyraldehyde (C3H7CHO), or butanal, serves as an intermediate in producing 2-ethylhexanol for plasticizers and synthetic resins. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. Classified as an 'other' acyclic aldehyde.

Butyraldehyde for Plasticizer Production

Butyraldehyde for Plasticizer Production is technical grade normal butyraldehyde dedicated for 2-ethylhexanol production used in DOP plasticizers. As a separate chemically defined acyclic aldehyde without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other'.

Cinnamaldehyde

Cinnamaldehyde, the principal component of cinnamon oil, is an α,β-unsaturated acyclic aldehyde used as a flavoring in chewing gum, candies, and beverages. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Citral

Citral is an acyclic aldehyde (3,7-dimethyl-2,6-octadienal) used primarily as a flavoring compound in lemon and citrus flavorings for foods and beverages. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Citral 95% Technical Grade

Citral 95% Technical Grade is a mixture of geranial and neral isomers, an acyclic aldehyde without other oxygen functions. It serves as a fragrance intermediate in detergent and cleaner formulations, providing citrus scent profiles, and falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Citral Extra (High Purity Flavor Grade)

Citral Extra is a refined, high-purity form of citral (≥96% purity) used in food flavorings to impart lemon-lime notes in beverages and confectionery. As an acyclic aldehyde without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Citral Natural (from Lemon Grass Oil)

Citral Natural (from Lemon Grass Oil) is an acyclic aldehyde (3,7-dimethyl-2,6-octadienal) extracted from lemon grass oil, used primarily as a flavoring and fragrance compound in food and cosmetics. It falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Decanal

Decanal, also known as capric aldehyde, is a straight-chain acyclic aldehyde used as a flavoring agent imparting orange and aldehyde notes in food products like beverages and confectionery. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Distilled n-Butyraldehyde 98.5%

Distilled n-Butyraldehyde 98.5% is high-purity distilled n-butyraldehyde, fractionally distilled to remove iso-butanal impurities. As a separate chemically defined acyclic aldehyde without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other'.

Glyoxal 40% Aqueous Solution

Glyoxal (CHOCHO) in 40% aqueous solution is a dialdehyde used primarily as a cross-linking agent in textile finishing and paper production. This acyclic aldehyde without other oxygen functions falls under tariff item 2912.19.00 as a separate chemically defined compound.

Glyoxal Anhydrous Crystals

Anhydrous glyoxal in crystalline form (hydrate-free) for specialty polymer synthesis is pure CHOCHO. It is classified under tariff item 2912.19.00 as an acyclic aldehyde without other oxygen functions, though this form is rare due to polymerization tendencies.

Glyoxal Diazo Dye Intermediate

Glyoxal serving as intermediate for azo dye coupler synthesis is a pure acyclic dialdehyde. It qualifies for tariff item 2912.19.00 as a separate chemically defined compound, and high purity is essential for colorfast dye production.

Glyoxal for Ink and Coating Crosslinker

Glyoxal used as reactive crosslinker in water-based ink and coating formulations is a pure dialdehyde. It qualifies for tariff item 2912.19.00 as an acyclic aldehyde without other oxygen functions, supplied at 40% to ensure formulation compatibility.

Glyoxal for Leather Tanning Intermediate

High-purity glyoxal used as crosslinking agent in synthetic leather tanning formulations is a chemically defined acyclic dialdehyde. It qualifies for tariff item 2912.19.00 per Chapter 29 scope, supplied as 40% solution to prevent polymerization.

Glyoxal Polymerization Inhibited Solution

40% glyoxal with proprietary polymerization inhibitor for long-term storage stability is classified under tariff item 2912.19.00. The inhibitor qualifies under Chapter 29 note 1(f) as a preservation-only additive, and the product remains a chemically defined glyoxal.

Glyoxal with Emetic Additive for Safety

Glyoxal 40% with emetic additive for safety identification remains classified under tariff item 2912.19.00. The emetic is added to facilitate identification for safety reasons and does not render the product particularly suitable for specific use, per Chapter 29 note 1(g).

Hexanal

Hexanal is a six-carbon acyclic aldehyde providing green, grassy flavor notes used in fruit and vegetable flavorings for processed foods. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

High Purity Glyoxal 50% Research Grade

50% glyoxal solution for laboratory synthesis and research applications is a chemically defined compound under tariff item 2912.19.00. It is a separate organic compound per Chapter 29 note 1(a), and the higher concentration is for specialized use.

Industrial Glyoxal 40% Bulk Tanker Grade

Glyoxal 40% solution optimized for bulk tanker delivery to large chemical consumers is classified under tariff item 2912.19.00. It is a chemically defined glyoxal per Chapter 29 transport provisions, with minimal stabilizer for extended bulk storage.

Industrial Grade n-Butanal

Industrial grade n-butanal (normal butyraldehyde) is a colorless liquid supplied at 97-99% purity for large-scale production of plasticizers and rubber accelerators. As a separate chemically defined acyclic aldehyde without other oxygen functions, it falls under tariff item 2912.19.00.

Isobutanal (2-Methylpropanal)

Isobutanal (2-methylpropanal), a colorless volatile liquid aldehyde with the formula (CH3)2CHCHO. It is a separate chemically defined acyclic aldehyde without other oxygen functions, used as a key intermediate in organic synthesis. Meets Chapter 29 criteria for acyclic aldehydes.

Isobutanal ACS Reagent Grade

Isobutanal ACS reagent grade with purity above 99.5% for laboratory synthesis and analysis. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. The high purity ensures suitability for analytical applications.

Isobutyraldehyde Technical Grade

Technical grade isobutanal (95-98% purity) used in industrial production of isobutanol and methacrolein. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. The technical grade allows for minor impurities.

Isovaleraldehyde Precursor Isobutanal

High-purity isobutanal serving as precursor for isovaleraldehyde synthesis in flavor chemistry. It is a separate chemically defined acyclic aldehyde without other oxygen functions, meeting Chapter 29 criteria. Critical for green leaf volatile production in perfumes.

Nonanal

Nonanal, a nine-carbon acyclic aldehyde, provides fatty, orange peel flavor notes for citrus and rose fragrance compounds in foods and perfumes. As a separate chemically defined compound without other oxygen functions, it falls under tariff item 2912.19.00 as 'Other' acyclic aldehydes.

Normal Butyraldehyde 99% Pure

Normal butyraldehyde (butanal) is a colorless volatile liquid used primarily as an intermediate in chemical synthesis for pharmaceuticals and fragrances. It is the straight-chain isomer and a separate chemically defined acyclic aldehyde without other oxygen functions, classified under tariff item 2912.19.00.

Pharmaceutical Grade Glyoxal USP/NF

Ultra-pure glyoxal meeting USP/NF standards for pharmaceutical intermediate synthesis and biocide formulations falls under tariff item 2912.19.00. It is a chemically defined acyclic dialdehyde per Chapter 29 scope, supplied at 40% concentration.

Pharma-Grade Butyraldehyde

Pharmaceutical-grade butyraldehyde (normal butanal) meets USP/EP standards for synthesis of active pharmaceutical ingredients like vitamins. It is the chemically defined normal isomer under tariff item 2912.19.00 as an acyclic aldehyde without other oxygen functions.

Stabilized Glyoxal 40% with Anticaking Agent

Glyoxal 40% solution with approved anticaking agent for bulk paper mill storage is classified under tariff item 2912.19.00. The additive complies with Chapter 29 note 1(f) as necessary for preservation or transport only, and the product remains chemically defined glyoxal.