Chapter 2910 — Customs Tariff Headings

2910.20.00Methyloxirane (propylene oxide)

2910.30.001-Chloro-2,3-epoxypropane (epichlorohydrin)

2910.40.00Dieldrin (ISO, INN)

2910.50.00Endrin (ISO)

2910.90.00Other

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Products classified under Tariff item 29.10

99.5% Ethylene Oxide Technical Grade

Technical-grade ethylene oxide at 99.5% purity, used as a chemical intermediate in the production of surfactants and other industrial chemicals. It is a separate chemically defined organic compound with a three-membered epoxide ring, falling squarely within tariff item 2910.10.00.

Ethylene Oxide 99.9% Purity USP Grade

High-purity ethylene oxide (99.9%) meeting USP standards for pharmaceutical applications. It is a separate chemically defined epoxide with a three-membered ring, classified under tariff item 2910.10.00 based on its chemical structure.

Ethylene Oxide for Ethylene Glycol Production

Technical-grade ethylene oxide used as a feedstock for ethylene glycol production. As a separate chemically defined epoxide with a three-membered ring, it is classified under tariff item 2910.10.00 regardless of its intended industrial application.

Ethylene Oxide in DOT-39 Cylinders

Compressed ethylene oxide gas packaged in non-refillable DOT-39 cylinders for industrial transport. The packaging is a standard method for shipping this epoxide and does not alter its classification as oxirane under tariff item 2910.10.00.

Ethylene Oxide in ISO Tank Containers

Ethylene oxide transported in ISO tank containers for international chemical trade. The container type does not affect the product's classification as oxirane under tariff item 2910.10.00, as it remains a pure epoxide.

Ethylene Oxide (Pure)

Pure ethylene oxide (C2H4O), a colourless, flammable gas with a three-membered epoxide ring. It is a fundamental organic compound used in industrial chemical synthesis and is classified under tariff item 2910.10.00 as oxirane.

Ethylene Oxide Railcar Bulk Import

Bulk ethylene oxide shipped in rail tank cars for petrochemical manufacturing. The product is a pure epoxide with a three-membered ring, classified under tariff item 2910.10.00, with the packaging serving only for transport.

Ethylene Oxide with Color Indicator

Ethylene oxide with a colouring agent added for identification purposes, as permitted under Chapter 29 note 1(g). The colouring does not render the product suitable for a specific use, so it remains classified as oxirane under tariff item 2910.10.00.

Ethylene Oxide with Emetic Additive

Ethylene oxide with an added emetic for safety identification, as allowed under Chapter 29 note 1(g). The emetic is added to facilitate identification and does not make the product suitable for a specific use, so it remains classified under tariff item 2910.10.00.

High-Pressure Ethylene Oxide Solution 10% in Water

An aqueous solution of ethylene oxide at 10% concentration, diluted for safe handling and transport. Under Chapter 29 note 1(d), solutions of chemically defined compounds in water are classified in the same heading, so this falls under tariff item 2910.10.00.

Industrial Ethylene Oxide for Sterilization

Ethylene oxide designated for gas sterilization in medical device manufacturing. Despite its specific end-use, it remains a separate chemically defined compound with an epoxide ring, classified under tariff item 2910.10.00.

Pharma-Grade Ethylene Oxide with Anticaking Agent

Pharmaceutical-grade ethylene oxide with an added anti-caking agent for preservation, as permitted under Chapter 29 note 1(f). The stabilizer is necessary for preservation and does not alter the product's classification as oxirane under tariff item 2910.10.00.

Reagent-Grade Ethylene Oxide 99.99%

Ultra-high purity reagent-grade ethylene oxide (99.99%) for laboratory synthesis. As a separate chemically defined epoxide with a three-membered ring, it is classified under tariff item 2910.10.00.

Stabilized Ethylene Oxide with Inhibitor

Ethylene oxide with a stabilizer added for safe transport, as allowed under Chapter 29 note 1(f). The stabilizer is solely for preservation and does not change the product's classification as oxirane under tariff item 2910.10.00.

Sterile Ethylene Oxide for Medical Gas

Sterile-grade ethylene oxide gas for hospital sterilizers, a pure epoxide with a three-membered ring. Its sterile grade does not affect classification, and it falls under tariff item 2910.10.00 as oxirane.

Electronic Grade Propylene Oxide

Ultra-high purity methyloxirane (propylene oxide) with less than 10 ppm metals, specifically formulated for semiconductor photoresist manufacturing. This separate chemically defined organic compound meets the purity standards of Chapter 29 and is classifiable under tariff item 2910.20.00 as an epoxide.

Industrial Propylene Oxide Drums

Methyloxirane (propylene oxide) packaged in 200L steel drums with a stabilizer for safe transport, used as a raw material for rigid polyurethane foam production. The added stabilizer is necessary for preservation or transport, as permitted by Chapter note 1(f), and the product remains classifiable under tariff item 2910.20.00.

Methyloxirane Bulk Chemical

Pure methyloxirane (propylene oxide) supplied in railcar quantities for chemical distribution, serving as a primary feedstock for hydroxypropyl derivatives in personal care products. This separate chemically defined epoxide is classifiable under tariff item 2910.20.00, provided it meets the purity criteria of Chapter 29.

Pharma Grade Propylene Oxide

GMP-certified methyloxirane (propylene oxide) meeting USP/EP standards for pharmaceutical intermediate synthesis, including production of epoxide hydrolase inhibitors and chiral building blocks. As a separate chemically defined organic compound, it is classifiable under tariff item 2910.20.00, provided it does not fall under a more specific heading such as pharmaceuticals.

Propylene Oxide

Methyloxirane, commonly known as propylene oxide, is a volatile, colorless liquid organic compound with a three-membered epoxide ring. It is a separate chemically defined epoxide, classifiable under tariff item 2910.20.00, and serves as a versatile intermediate in various industrial applications.

Propylene Oxide 99.9% Technical Grade

High-purity methyloxirane (propylene oxide) at 99.9% concentration, supplied in bulk for industrial synthesis, particularly in manufacturing surfactants and other derivatives. This separate chemically defined epoxide meets the requirements of Chapter 29 and is classifiable under tariff item 2910.20.00.

Propylene Oxide for Polyol Synthesis

High-grade methyloxirane specifically for alkoxylation reactions producing polyether polyols, classified under tariff item 2910.20.00 as a separate chemically defined epoxide. This product meets Chapter 29 requirements for epoxides used in polymer manufacturing.

Propylene Oxide Polymerization Inhibited

Methyloxirane with 50 ppm hydroquinone monomethyl ether inhibitor, preventing exothermic polymerization during storage and transport for the polyurethane industry. The inhibitor is added for preservation or transport, as permitted by Chapter note 1(f), and the product remains classifiable under tariff item 2910.20.00.

Propylene Oxide with Anti-Dusting Agent

Methyloxirane containing a trace anti-dusting additive for safety handling, classified under tariff item 2910.20.00 per Chapter note 1(g). This product is used in open-system manufacturing of flame retardants and pharmaceuticals, and the additive does not render it suitable for a specific use.

Stabilized Propylene Oxide ISO Tanks

Methyloxirane with added polymerization inhibitor in 20MT ISO tanks for bulk import, under tariff item 2910.20.00 per Chapter note 1(f) for stabilized products. Used in continuous production of propylene glycol and surfactants, this product is a separate chemically defined epoxide.

Distilled Epichlorohydrin 99.9% Pharmaceutical Intermediate

Ultra-high purity distilled epichlorohydrin (99.9%) used as a pharmaceutical intermediate for glycidyl ether synthesis. This chemically defined halogenated epoxide with a three-membered ring falls under tariff item 2910.30.00, regardless of its intended pharmaceutical end use.

Epichlorohydrin 99.5% Technical Grade

Technical grade epichlorohydrin (99.5% purity) is a colorless liquid with a sweet odor, classified under tariff item 2910.30.00 as a halogenated epoxide with a three-membered ring. It serves as a key chemical intermediate in various industrial applications.

Epichlorohydrin ACS Reagent Grade

High-purity epichlorohydrin (≥99.8%) meeting American Chemical Society standards for laboratory use. This chemically defined epoxide with a three-membered ring and chlorination is classified under tariff item 2910.30.00, regardless of its laboratory reagent application.

Epichlorohydrin Bulk Tanker Grade 99.0%

Industrial-grade epichlorohydrin at 99.0% purity for bulk import via ISO tank or railcar. This is the principal epoxide used for large-scale epoxy resin and water treatment chemical production, classified under tariff item 2910.30.00.

Epichlorohydrin for Epoxy Resin Monomer

Standard industrial epichlorohydrin at 99.4% purity for bisphenol A epoxy resin production (DGEBA). This is the world's largest volume epoxide, classified under tariff item 2910.30.00 based on its chemical definition as 1-Chloro-2,3-epoxypropane.

Epichlorohydrin for Glycidyl Ether Synthesis

High-assay epichlorohydrin (99.7%) specifically distilled for glycidyl ether pharmaceutical intermediates. Classification under tariff item 2910.30.00 is based on the epoxide structure, regardless of the intended synthesis application.

Epichlorohydrin Inhibited with Propylene Oxide

Commercial epichlorohydrin stabilized with propylene oxide to prevent polymerization, containing 99% epichlorohydrin. This meets Chapter 29 Note 1(f) for stabilizers necessary for transport, maintaining classification under tariff item 2910.30.00.

Epichlorohydrin in Toluene Solution 50% w/w

50% epichlorohydrin dissolved in toluene for safe transport, qualifying under Chapter 29 Note 1(e) as a normal transport solution. The epoxide component determines the tariff classification under item 2910.30.00, as the solvent does not render the product suitable for specific use.

Epichlorohydrin Low Chloride Grade

Purified epichlorohydrin with <10ppm ionic chloride for water treatment polymer production. Despite the low-residue specification, the product is technically classified under tariff item 2910.30.00 as 1-Chloro-2,3-epoxypropane.

Epichlorohydrin Monomer for Elastomer Production

Specialty epichlorohydrin monomer grade with controlled chlorine isotopes for ECO rubber production. Classification under tariff item 2910.30.00 is based on the chemical structure as 1-Chloro-2,3-epoxypropane, regardless of the elastomer production application.

Epichlorohydrin Stabilized for Marine Transport

Epichlorohydrin with marine-approved polymerization inhibitor for extended sea voyages. This complies with Chapter 29 Note 1(f) stabilizer allowance, classified under tariff item 2910.30.00. The product is IMDG Type 6.1(8) PG II.

Epichlorohydrin Technical Grade Drums

99.2% epichlorohydrin packaged in 440 lb steel drums with phenolic lining for industrial distribution. This standard multi-purpose chemical intermediate used in resins, plastics, and pharmaceuticals is classified under tariff item 2910.30.00.

Epichlorohydrin with Anti-Dusting Agent

Epichlorohydrin containing a silica anti-dusting agent (<0.1%) for bulk handling safety. The addition of the anti-dusting agent does not render the product particularly suitable for specific use, so it retains classification under tariff item 2910.30.00 per Chapter 29 Note 1(g).

Epichlorohydrin with Color Identification Additive

Epichlorohydrin containing a safety yellow dye (<0.001%) for line identification in multi-product facilities. The coloring additive does not render the product particularly suitable for specific use, maintaining classification under tariff item 2910.30.00 per Chapter 29 Note 1(g).

Epichlorohydrin with Emetic Additive

Epichlorohydrin containing denatonium benzoate emetic for safety identification per Chapter 29 Note 1(g). The addition does not confer specific use, so the product retains classification under tariff item 2910.30.00 as a chemically defined epoxide.

Dieldrin 90% Wettable Powder

>- Dieldrin 90% wettable powder, a formulation of the insecticide dieldrin with a minimal anti-dusting agent. It is classified under tariff item 2910.40.00 as the active ingredient is dieldrin (ISO, INN), a separate chemically defined organic compound with an epoxide ring, and the added agent does not alter its primary use.

Dieldrin 98% Pure Crystal

>- High-purity dieldrin crystals (98%) are a separate chemically defined organic compound with a halogenated epoxide structure. This product falls under tariff item 2910.40.00 as dieldrin (ISO, INN), regardless of its physical form, and is used primarily in research or as an intermediate.

Dieldrin Aqueous Solution 50%

>- Dieldrin aqueous solution at 50% concentration is dieldrin dissolved in water. Under Chapter 29 Note 1(d), such solutions are classified in the same heading as the pure compound, so it falls under tariff item 2910.40.00 as dieldrin (ISO, INN).

Dieldrin for Analytical Calibration

>- Dieldrin for analytical calibration is a pure form of dieldrin used as a standard in gas chromatography. It is a separate chemically defined organic compound with an epoxide structure, falling under tariff item 2910.40.00 as dieldrin (ISO, INN).

Dieldrin Organochlorine Standard

>- Dieldrin organochlorine standard is a certified reference material for monitoring organochlorine residues. It is dieldrin (ISO, INN) with a defined epoxide structure, classified under tariff item 2910.40.00.

Dieldrin Reference Standard USP

>- Dieldrin reference standard USP is a high-purity grade used for calibration in pharmaceutical and environmental testing. It is dieldrin (ISO, INN) as a chemically defined organic compound, falling under tariff item 2910.40.00.

Dieldrin Stabilized for Transport

>- Dieldrin stabilized for transport includes a stabilizer to prevent degradation during shipping. Under Chapter 29 Note 1(f), such products remain classified in the same heading as the pure compound, so it falls under tariff item 2910.40.00 as dieldrin (ISO, INN).

Dieldrin Technical Grade Powder

>- Dieldrin technical grade powder is a chlorinated epoxide pesticide with a three-membered epoxide ring. It is classified under tariff item 2910.40.00 as dieldrin (ISO, INN), a separate chemically defined organic compound.

Dieldrin with Emetic Additive

>- Dieldrin with emetic additive includes an emetic for safety identification, as permitted by Chapter 29 Note 1(g). The product remains dieldrin (ISO, INN) and is classified under tariff item 2910.40.00.

High Purity Dieldrin Flake

>- High purity dieldrin flake (95%) is a halogenated epoxide compound used in synthesis or as a pesticide active. It is dieldrin (ISO, INN) and falls under tariff item 2910.40.00 as a separate chemically defined organic compound.

Endrin 20% Wettable Powder

Endrin 20% Wettable Powder is a formulated crop protection product containing endrin as the active ingredient, along with wetting agents and inert carriers. The endrin component is a separate chemically defined organic compound with a three-membered epoxide ring, falling under tariff item 2910.50.00. The formulation does not render the product particularly suitable for a specific use beyond its general insecticidal function.

Endrin Aqueous Solution 1mg/L

Endrin Aqueous Solution 1mg/L is a dilute solution of endrin in water, prepared for analytical calibration in pesticide residue testing. As a solution of a separate chemically defined organic compound in water, it qualifies under Chapter 29 Note 1(d). The endrin component is an epoxide with a three-membered ring, classified under tariff item 2910.50.00.

Endrin-Keto Isomer Mixture

Endrin-Keto Isomer Mixture is a blend of endrin and its keto-epoxy degradation product, used in analytical toxicology studies. As a mixture of isomers of the same organic compound, it falls under Chapter 29 Note 1(b). The endrin component is an epoxide with a three-membered ring, and the mixture is classified under tariff item 2910.50.00.

Endrin Reference Standard 99% Pure

Endrin Reference Standard 99% Pure is a high-purity analytical grade of endrin, used for calibration in pesticide residue testing laboratories. As a separate chemically defined organic compound with a three-membered epoxide ring, it is classified under tariff item 2910.50.00. The product meets Chapter 29 Note 1(a) as a pure compound.

Endrin Technical Grade 95%

Endrin Technical Grade 95% is a concentrated formulation of the organochlorine insecticide endrin, consisting primarily of the epoxy compound with a three-membered ring structure. As a separate chemically defined organic compound with impurities, it falls under Chapter 29 Note 1(a). The product is classified under tariff item 2910.50.00 as endrin (ISO).

1,2-Epoxy-2-Methylpropane

1,2-Epoxy-2-methylpropane is a separate chemically defined organic compound with a three-membered epoxide ring, falling under heading 29.10 as an ether. It is used as an alkylating agent in fine chemical synthesis and meets the chapter's criteria for chemically defined organic compounds.

1,2-Epoxy-3-Phenoxypropane

1,2-Epoxy-3-phenoxypropane, also known as phenyl glycidyl ether, is an aromatic epoxyether with a three-membered epoxide ring, classified under heading 29.10. It is used as a reactive diluent in epoxy resin systems and as a modifier for coatings and adhesives.

2-Ethylhexyl Glycidyl Ether

2-Ethylhexyl glycidyl ether is a branched chain epoxyether with a three-membered ring, classified under heading 29.10. It is used as a low-viscosity reactive diluent in epoxy composites and coatings.

2-Methyloxirane (Isobutylene Oxide)

2-Methyloxirane, also known as isobutylene oxide, is a branched epoxide with a three-membered ring, classified as a separate chemically defined organic compound under heading 29.10. It serves as a key intermediate in manufacturing various chemicals and polymers.