Chapter 2924 — Customs Tariff Headings

Colored Meprobamate for Identification

Meprobamate powder with a trace odoriferous substance added for safety identification during handling. This addition is permitted under Chapter 29 Note 1(g) as it does not render the product particularly suitable for a specific use rather than general use, so it remains classified as meprobamate (INN).

Meprobamate Bulk Chemical Powder

Bulk industrial-grade meprobamate powder for pharmaceutical research and synthesis. As a separate chemically defined organic compound, it falls under Chapter 29 Note 1(a) and is classified as meprobamate (INN) in tariff item 2924.11.00.

Meprobamate EP Grade Crystals

Crystalline meprobamate conforming to European Pharmacopoeia standards for use in generic drug manufacturing. It is a separate chemically defined compound, classified as meprobamate (INN) under tariff item 2924.11.00, an acyclic carbamate.

Meprobamate in Aqueous Solution

A 10% meprobamate solution in water for safe chemical transport. Chapter Note 1(d) permits products dissolved in water, so it retains classification as meprobamate (INN) under tariff item 2924.11.00.

Meprobamate Technical Grade

Technical grade meprobamate at 95% purity for initial-stage pharmaceutical synthesis. Chapter Note 1(a) allows impurities, so it remains classified as meprobamate (INN) under tariff item 2924.11.00.

Meprobamate USP Powder

Pure meprobamate powder meeting United States Pharmacopeia standards, used as an active pharmaceutical ingredient for anxiolytic medications. It is a separate chemically defined compound, classified as meprobamate (INN) under tariff item 2924.11.00.

Meprobamate with Stabilizer Additive

Meprobamate powder with a stabilizer added for safe transport and preservation, as permitted under Chapter Note 1(f). It remains classified as meprobamate (INN) under tariff item 2924.11.00.

Pharmaceutical Grade Meprobamate API

High-purity meprobamate active pharmaceutical ingredient (API) for compounding tranquilizer formulations. As a separate chemically defined compound, it is classified as meprobamate (INN) under tariff item 2924.11.00.

Research Grade Meprobamate

High-purity meprobamate for laboratory research on carbamate pharmacology. It is a separate chemically defined compound, classified as meprobamate (INN) under tariff item 2924.11.00, regardless of quantity.

Sterile Meprobamate for Injection

Lyophilized sterile meprobamate powder intended for reconstitution into injectable anxiolytic solutions. As pure meprobamate (INN), it is classified under tariff item 2924.11.00 prior to final formulation.

Fluoroacetamide (ISO)

Fluoroacetamide (ISO) is a highly toxic acyclic amide compound used primarily as a rodenticide for pest control. It is a separate chemically defined organic compound specifically named in tariff item 2924.12.00, which covers fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO).

Fluoroacetamide Rodenticide Active Ingredient

Pharmaceutical-grade fluoroacetamide (ISO) is a separate chemically defined organic compound used as an active ingredient in rodenticidal products. It is specifically named in tariff item 2924.12.00, which covers fluoroacetamide (ISO), monocrotophos (ISO) and phosphamidon (ISO), regardless of its purity grade.

Monocrotophos 36% SL Formulation Precursor

High-purity monocrotophos used as a precursor for 36% soluble liquid (SL) insecticide formulations is a separate chemically defined organic compound. It is specifically named in tariff item 2924.12.00, which covers monocrotophos (ISO) along with fluoroacetamide (ISO) and phosphamidon (ISO).

Monocrotophos Technical Grade (ISO)

Monocrotophos technical grade (ISO) is an acyclic amide organophosphate insecticide used for controlling piercing-sucking pests in agriculture. It is specifically named in tariff item 2924.12.00, which covers monocrotophos (ISO), fluoroacetamide (ISO) and phosphamidon (ISO).

Phosphamidon Technical (ISO)

Phosphamidon technical (ISO) is a systemic organophosphate insecticide and acaricide named specifically in tariff item 2924.12.00 as an acyclic amide derivative. It is used primarily on cotton, citrus, and vegetables for broad-spectrum pest control and is a separate chemically defined organic compound.

Acetamide

Acetamide is a simple acyclic amide derived from acetic acid, with the chemical formula CH3CONH2. It is used as a solvent, plasticizer, and in organic synthesis. As a separate chemically defined organic compound, it falls under tariff item 2924.19.00 for other acyclic amides.

Acetamide Sodium Salt

Sodium acetamide is the sodium salt of acetamide, used in organic reactions and buffers. Per Chapter 29 note 5(C)(1), inorganic salts of organic compounds are classified with the organic compound, so it falls under tariff item 2924.19.00.

Acrylamide

Acrylamide (CH2=CHCONH2), an acyclic amide monomer used for polyacrylamide production. It is a separate chemically defined organic compound, classified under 2924.19.00 as an 'Other' acyclic amide.

Acrylamide Flake Form Stabilized

Acrylamide in flake form with a polymerization inhibitor (e.g., copper sulfate <0.1%) is a chemically defined acyclic amide. The stabilizer is permitted under Chapter 29 note 1(f) as necessary for transport, so it falls under tariff item 2924.19.00.

Acrylamide Monomer

Acrylamide monomer (CH2=CHCONH2) is a chemically defined acyclic amide used primarily as a monomer in polymerization reactions. It falls under tariff item 2924.19.00 as an other acyclic amide.

Acrylamide with MEHQ Inhibitor

Acrylamide with 30-50 ppm MEHQ (4-methoxyphenol) as a polymerization inhibitor is a chemically defined acyclic amide. The stabilizer is allowed under Chapter 29 note 1(f), so it falls under tariff item 2924.19.00.

Anhydrous Dimethylformamide Solvent

Anhydrous dimethylformamide is water-free DMF used for moisture-sensitive reactions such as Grignard setups in organic synthesis. As pure N,N-dimethylformamide, it qualifies as a separate chemically defined acyclic amide under this tariff item. The absence of water does not affect classification, as the compound is the same chemical entity.

Butyramide

Butyramide (C3H7CONH2) is a linear acyclic amide used as an intermediate in pesticide and flavor synthesis. It is a separate chemically defined organic compound, qualifying under tariff item 2924.19.00 for other acyclic amides.

Capramide

Capramide (decanamide), a longer-chain acyclic amide used in lubricants. It is a pure, chemically defined compound, classified under 2924.19.00 as an 'Other' acyclic amide.

Diethylacetamide

Diethylacetamide, a disubstituted acyclic amide used as a solvent and intermediate. It is a separate chemically defined compound, classified under 2924.19.00 as an 'Other' acyclic amide derivative.

Dimethylacetamide (DMAC)

N,N-Dimethylacetamide (DMAC) is a polar aprotic solvent and amide derivative with the formula CH3CON(CH3)2. It is used in pharmaceuticals and fiber production. As a chemically defined acyclic amide, it falls under tariff item 2924.19.00.

Dimethylformamide (DMF) 99.9% Pure

Dimethylformamide (DMF), chemically N,N-dimethylformamide (CAS 68-12-2), is a colorless liquid amide used as a versatile aprotic solvent in chemical reactions and polymer processing. It is a separate chemically defined acyclic amide, classified under this tariff item. The product meets Chapter 29 Note 1(a) as a distinct organic compound.

Dimethylformamide for Peptide Synthesis

DMF for solid-phase peptide synthesis is a high-purity solvent used as a coupling agent solvent in biotech laboratories. It is the specific acyclic amide dimethylformamide, classified under this tariff item. The product's intended use does not affect classification, as it remains a separate chemically defined compound.

Dimethylformamide with Stabilizer

DMF containing a minimal stabilizer for transport stability is still primarily the acyclic amide dimethylformamide. Chapter 29 Note 1(f) permits the addition of stabilizers necessary for preservation or transport without changing classification. The product remains classified under this tariff item as a separate chemically defined compound.

DMF for Polyacrylonitrile Fiber Production

Specialty DMF used in the solvent-spinning process for acrylic fibers offers high solvency for polymers. It is the chemically defined compound dimethylformamide, classified under this tariff item. The product's end-use in fiber production does not affect its classification as a pure acyclic amide.

DMF Solvent for Battery Electrolyte Synthesis

DMF used in lithium battery electrolyte formulation is prized for dissolving lithium salts. It is pure dimethylformamide, an acyclic amide classified under this tariff item. The product's use in battery applications does not change its classification as a separate chemically defined compound.

Ethyl Carbamate (Urethane)

Ethyl carbamate, also known as urethane, is an acyclic carbamate ester-amide used historically in medicine and now in research. It is a chemically defined compound, falling under tariff item 2924.19.00 for other acyclic amides and carbamates.

Formamide

Formamide (HCONH2) is the simplest amide, used in textile treatment and organic synthesis. It is a separate chemically defined acyclic amide, falling under tariff item 2924.19.00 for other acyclic amides.

Glacial Acrylamide Crystals

Glacial acrylamide crystals, purified by recrystallization with a melting point of 84-86°C, are a chemically defined acyclic amide. They fall under tariff item 2924.19.00 as pure acrylamide.

Hexanamide

Hexanamide (caproamide), used in organic synthesis and as a corrosion inhibitor. It is a chemically defined acyclic amide, classified under 2924.19.00 as an 'Other' acyclic amide.

High Purity Acrylamide for Pharmaceuticals

High purity acrylamide is an ultra-pure (>99.5%) acyclic amide meeting pharmaceutical intermediate standards, free of heavy metals and residual monomers. It is a separate chemically defined organic compound, classified under this tariff item regardless of its high purity or intended use. The product falls under Chapter 29 Note 1(a) as a distinct chemical entity.

High-Purity DMF for OLED Manufacturing

Ultra-high purity DMF serves as a solvent in organic electronics, particularly OLED layer deposition. It is classified as the acyclic amide dimethylformamide under this tariff item. The product's high purity and specialized use do not affect its classification as a separate chemically defined compound.

High Purity Methacrylamide for Pharmaceuticals

Pharmaceutical grade methacrylamide (>99.5% purity) is used as an intermediate in drug conjugate synthesis. It meets Chapter 29 Note 1(a) criteria as a separate chemically defined compound, specifically classified under acyclic amides. The product's high purity and pharmaceutical use do not affect its classification.

Industrial Grade Dimethylformamide DMF

Industrial-grade DMF is a high-volume solvent for polyurethane production and fiber spinning, characterized by its high boiling point and miscibility with water. It is classified under this tariff item as the specific acyclic amide dimethylformamide. The industrial grade meets Chapter 29 Note 1(a) as a separate chemically defined compound.

Isobutyramide

Isobutyramide ((CH3)2CHCONH2) is a branched acyclic amide used in fragrance synthesis. It is a chemically defined organic compound, qualifying under tariff item 2924.19.00 for other acyclic amides.

Lactam (Beta-Propiolactam)

Beta-propiolactam is a strained four-membered ring lactam amide used as a monomer in polymer production, including nylon precursors. Despite its ring structure, it is classified as an acyclic amide derivative under this tariff item because the ring is not a heterocyclic ring for classification purposes. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a).

Methacrylamide 98% Technical Grade

Technical grade methacrylamide at 98% purity is an acyclic carboxamide used in adhesive formulations and hydrogel production. It falls under this tariff item as it meets the criteria for chemically defined organic compounds with minimal impurities. The product is not formulated for retail sale and contains no added substances beyond natural impurities.

Methacrylamide Distillation Residue (Purified)

Purified distillation bottoms containing primarily methacrylamide with trace amide isomers. The product meets Chapter 29 purity standards as a chemically defined methacrylamide, despite being a residue, and is classified under 2924.19.00 as an 'Other' acyclic amide.

Methacrylamide Flake Form

Methacrylamide in stable flake form to minimize dust and polymerization risk during handling. The flake form is a physical presentation of the pure acyclic amide, and any anti-dusting agent is permitted only for safety per Chapter 29 note (g), so it remains under 2924.19.00.

Methacrylamide for Contact Lens Production

Methacrylamide in a specialty grade optimized for hydrophilic contact lens monomer blends. It is a pure acyclic amide compound (CH2=C(CH3)CONH2) with no formulation additives, so it falls under tariff item 2924.19.00 as an 'Other' acyclic amide.

Methacrylamide Monomer

Methacrylamide monomer, an acyclic amide-function compound with the chemical formula CH2=C(CH3)CONH2, used as a key monomer in polymerization reactions. It is a separate chemically defined organic compound, classified under 2924.19.00 as an 'Other' acyclic amide.

Methacrylamide N-Hydroxy Derivative

N-Hydroxymethacrylamide, a chemically defined derivative of methacrylamide, still classifiable as an acyclic amide under 2924.19.00. It is used in photoinitiator synthesis and advanced polymer cross-linking.

Methacrylamide with MEHQ Stabilizer

Methacrylamide stabilized with 100-400 ppm MEHQ (monomethyl ether hydroquinone) to prevent polymerization during storage and transport. The stabilizer is permissible under Chapter 29 note (f) as necessary for preservation, so the product remains classified as pure methacrylamide under 2924.19.00.

N-Methylacetamide

N-Methylacetamide is a mono-substituted acyclic amide used in peptide synthesis and as a solvent. It is a chemically defined compound, falling under tariff item 2924.19.00 for other acyclic amides.

N,N-Diethylacetamide

N,N-Diethylacetamide is a di-substituted acyclic amide solvent, similar to DMAC. It is a chemically defined organic compound, qualifying under tariff item 2924.19.00 for other acyclic amides.

Pharmaceutical Grade Dimethylformamide

Pharmaceutical-grade DMF meets USP/EP standards for use in drug synthesis and peptide manufacturing, ensuring low impurity levels. It is specifically dimethylformamide, an acyclic amide, classified directly under this tariff item. The product's pharmaceutical grade does not change its classification as a separate chemically defined compound.

Propionamide

Propionamide (CH3CH2CONH2) is an acyclic amide derived from propionic acid, used in pharmaceuticals and chemical manufacturing. It is a chemically defined compound, falling under tariff item 2924.19.00.

Technical Grade Acrylamide 98%

Technical grade acrylamide at 98% purity is supplied as a white crystalline powder for industrial polymerization. It remains a separate chemically defined acyclic amide, meeting the criteria of Chapter 29 Note 1(a) despite the presence of minimal impurities. The product is not formulated for retail sale and contains no added substances beyond natural impurities.

Technical Grade DMF 99.5%

Technical DMF at 99.5% purity is used for general industrial solvent applications like paint stripping. It is classified as the acyclic amide dimethylformamide under this tariff item. The product meets Chapter 29 Note 1(a) as a separate chemically defined compound with minimal impurities.

Valeramide

Valeramide (C4H9CONH2), also known as pentanamide, is a linear acyclic amide used in pharmaceutical intermediates. It is a chemically defined organic compound, qualifying under tariff item 2924.19.00.

1-(2-Methylcyclohexyl)-3-phenylurea Technical Grade

1-(2-Methylcyclohexyl)-3-phenylurea Technical Grade is a pure synthetic urea derivative classified as an aromatic ureine pesticide. It is classified under tariff item 2924.21.00 as a ureine derivative, being a cyclic amide of carbonic acid, with a phenyl group and cyclohexyl ring.

3-Phenyl-1-(2-Methylcyclohexyl)Urea Crystals

3-Phenyl-1-(2-Methylcyclohexyl)Urea Crystals is a crystalline form of 1-(2-methylcyclohexyl)-3-phenylurea, a chemically defined aromatic ureine pesticide. It is classified under tariff item 2924.21.00 as a ureine derivative, being a cyclic amide of carbonic acid, used in agricultural chemical production.

4-Methoxyphenyl Ureine MPU-22

4-Methoxyphenyl Ureine MPU-22 is a methoxy-substituted aromatic ureine derivative used for organic synthesis and research applications. It is a separate chemically defined organic compound with a cyclic carbamate structure, classified under cyclic amides of carbonic acid. This tariff item applies to ureines and their derivatives.

Aromatic Cyclic Carbamate CM-42

Aromatic Cyclic Carbamate CM-42 is an aromatic cyclic carbamate derivative functioning as a ureine, used in medicinal chemistry for CNS drug development. It is a separate chemically defined organic compound with a carboxyamide function, classified under cyclic amides of carbonic acid. This tariff item covers ureines and their derivatives.