Other
Prepared binders for foundry moulds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included. > Other: > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 3824.99.00
5-Fluoro-2-Methyl-1-[[4-(Methylsulfinyl)-Phenyl]Methylene]-1H-Indene Compound
5-Fluoro-2-methyl-1-[[4-(methylsulfinyl)-phenyl]methylene]-1H-indene is a synthetic indene derivative used in pharmaceutical intermediates and agrochemical synthesis. This preparation contains 5% or more of the modified aromatic substance, placing it under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Advanced Packaging Photoresist Mixture
This aqueous preparation of specified sulfonium chlorides is used in fan-out wafer-level packaging for mobile processors. It falls under tariff item 3824.99.00 as a chemical product not elsewhere specified, due to its defined aromatic sulfonium content in chemical preparations.
Anthracene Oil for Dye Production
Anthracene oil is a coal tar fraction rich in anthracene and phenanthrene, used as a feedstock for producing alizarin dyes and pharmaceuticals. It consists entirely of naturally occurring coal tar aromatics. This product falls under tariff item 3824.99.00 as a chemical product of the chemical or allied industries, not elsewhere specified or included.
Aromatic Amine Antioxidant Formulation
This is a stabilizer mixture containing aromatic amines above 5% concentration, used to prevent oxidation in fuels and lubricants. It is classified under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated additive mixture rather than a separate chemically defined compound.
Aromatic Epoxy Resin Hardener Mixture
This is a two-part chemical preparation used as a hardener for epoxy resins, containing over 5% aromatic substances such as benzyl alcohol and phenyl glycidyl ether. It falls under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated curing agent mixture.
Aromatic-Modified Adhesive Promoter Primer
This is a primer solution that enhances adhesion of glues to metal and plastic surfaces, containing greater than 5% aromatic silanes for chemical bonding. It is classified under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated adhesion promoter mixture.
Aromatic Solvent-Based Paint Thinner Blend
This is a solvent mixture for thinning industrial paints and coatings, containing more than 5% aromatic hydrocarbons like xylene and toluene for effective viscosity reduction. It falls under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated solvent blend.
Benzene 2,4-Diisocyanate-1,3,5-Tris(1-Methylethyl) Homopolymer Resin
This specialized aromatic homopolymer resin derived from benzene 2,4-diisocyanate-1,3,5-tris(1-methylethyl) is used in high-performance coatings and adhesives. It falls under tariff item 3824.99.00 as a chemical product not elsewhere specified, due to its explicit listing and aromatic content.
Benzene-Derivative Chemical Cleaning Concentrate
This is a concentrated cleaner for industrial machinery using benzene-derived aromatics over 5% by weight, effective against oils and greases. It is classified under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated cleaning mixture.
Calcium Fluoride Ingot for UV Laser Optics
Calcium fluoride (CaF2) single crystal ingot grown by the Czochralski method, weighing more than 2.5 grams, intended for use as optical windows in excimer lasers. These cultured crystals are not optical elements of Chapter 90 and are classified under heading 38.24 as chemical products not elsewhere specified.
Coal Tar Creosote for Wood Preservation
Coal tar creosote is a dark, oily liquid distilled from coal tar, composed wholly of polycyclic aromatic hydrocarbons (PAHs) naturally found in coal tar. It is primarily used as a wood preservative for railroad ties and utility poles. This product is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Coal Tar Naphtha Solvent
Coal tar naphtha solvent is a light oil fraction from coal tar distillation, containing benzene, toluene, and xylene, used as industrial solvents and thinners. It consists purely of natural coal tar aromatics. This product is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Coal Tar Pitch for Electrode Manufacturing
Coal tar pitch is a residue from coal tar distillation, rich in aromatic compounds like naphthalene and anthracene naturally occurring in coal tar. It serves as a binder in producing carbon electrodes for aluminum smelting. This product falls under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Dimethyl Phthalate, t-Butanol, Hydrogen Peroxide, Sodium Salicylate Mixture
This specific quaternary mixture of dimethyl phthalate, t-butanol, hydrogen peroxide, and sodium salicylate is used in oxidation reactions and chemical synthesis processes. It is directly enumerated under tariff item 3824.99.00 due to its ≥5% aromatic content from dimethyl phthalate, qualifying as a chemical product not elsewhere specified.
Gallium Arsenide Ingot
Gallium arsenide (GaAs) single crystal ingot grown by LEC method, weighing over 2.5 grams, for LED and solar cell substrates. This cultured crystal is not an optical element and falls under heading 38.24.
Gallium Nitride Ingot for LED Substrate Manufacturing
Gallium nitride (GaN) boule grown by hydride vapor phase epitaxy, weighing more than 2.5 grams, supplied in cylindrical ingot form for subsequent wafering in LED substrate manufacturing. This cultured crystal is not an optical element and falls under heading 38.24.
Grown Diamond Substrate
CVD-grown single-crystal diamond substrate weighing more than 2.5 grams, used in electronics heat sinks. This cultured crystal is not an optical element and is classified under heading 38.24.
High-Aromatic Flux Remover Preparation
This is a chemical cleaner for removing solder flux in electronics manufacturing, featuring over 5% modified aromatic compounds for residue-free performance. It falls under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a formulated cleaning preparation.
Indene Derivative Pesticide Intermediate Blend
This is a chemical preparation containing 5-Fluoro-2-methyl-1-[[4-(methylsulfinyl)-phenyl]methylene]-1H-indene, an indene derivative used as a key intermediate in the synthesis of insecticides. It is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified or included, since it is a mixture of the chemical or allied industries rather than a separate chemically defined compound.
Isophorone Diisocyanate Homopolymer Solution 60% in Aromatic Solvent
This is a 60% solution of an isophorone diisocyanate homopolymer dissolved in aromatic hydrocarbons, used as a raw material in polyurethane coatings. It falls under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a mixture of polymers and solvents rather than a separate chemically defined compound.
KY Crystal Ingot
Potassium Titanyl Phosphate (KTP) single crystal ingot grown by flux method, weighing over 2.5 grams, for nonlinear optics. This cultured crystal is not an optical element and falls under heading 38.24.
Lithium Niobate Crystal
Monocrystalline lithium niobate boule grown by flux method, exceeding 2.5 grams, for electro-optic devices. This cultured crystal is not an optical element and is classified under heading 38.24.
N-[4-(2-Hydroxy-3-Phenoxypropoxy)Phenyl]-Acetamide Derivative Mixture
This is a chemical preparation containing derivatives of N-[4-(2-Hydroxy-3-Phenoxypropoxy)Phenyl]-Acetamide, used in pharmaceutical and fine chemical manufacturing. It is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified or included, since it is a mixture of the chemical or allied industries rather than a separate chemically defined compound.
Nanofabrication Sulfonium Chloride Solution
This high-purity aqueous solution of named sulfonium chlorides is used for extreme ultraviolet (EUV) lithography in nanofabrication. It is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified, matching the subheading's specific chemical mixture definition.
Naphthalene Crystals from Coal Tar
Naphthalene crystals from coal tar are purified crystalline aromatic hydrocarbons used in mothballs, dyes, and plasticizers. They are composed solely of this naturally occurring coal tar substance. This product is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Peroxide Oxidation Reagent Kit (DMP/H2O2/t-BuOH/Salicylate)
This is a laboratory reagent kit containing dimethyl phthalate, t-butanol, hydrogen peroxide, and sodium salicylate, used for selective oxidation reactions. It falls under tariff item 3824.99.00 as a chemical preparation of the chemical or allied industries not elsewhere specified or included, being a mixture of multiple components for a specific analytical purpose.
Phenanthrene Flakes from Coal Tar
Phenanthrene flakes are purified from coal tar middle oil fraction and used in the synthesis of dyes, explosives, and resins. They consist wholly of this tricyclic aromatic hydrocarbon natural to coal tar. This product falls under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Photoresist Developer Solution
This aqueous mixture containing triphenyl sulfonium chloride, diphenyl (4-phenylthio)phenyl sulfonium chloride, and (thiodi-4,1-phenylene)bis(diphenyl sulfonium) dichloride is used as a developer in semiconductor photolithography. It falls under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Pyrene Concentrate for Research
Pyrene concentrate is a polycyclic aromatic hydrocarbon isolated from coal tar, supplied as a concentrate for organic electronics and research. It is wholly a coal tar natural substance. This product is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified.
Quartz Crystal Boule
Hydrothermal synthetic quartz crystal boule weighing more than 2.5 grams, used for frequency control applications. This cultured crystal is not an optical element and falls under heading 38.24.
Quartz Ingot for Photomask Substrates
Synthetic quartz crystal ingot grown hydrothermally, exceeding 2.5 grams, used for EUV photomask blanks in chip fabrication. This cultured crystal is not an optical element and is classified under heading 38.24 as a chemical product not elsewhere specified.
Sapphire Ingot for Optical Window Substrates
Synthetic sapphire (aluminum oxide) ingot grown by the Czochralski method, weighing more than 2.5 grams, used for laser windows and scratch-resistant displays. This cultured crystal is not an optical element and falls under heading 38.24.
Semiconductor Lithography Resist Activator
This specialty aqueous solution containing the precise sulfonium chloride mixture is used for activating photoresists in microchip fabrication. It is classified under tariff item 3824.99.00 as a chemical product not elsewhere specified, matching the subheading's chemical composition requirements.
Silicon Carbide Ingot for Semiconductor Wafer Production
Silicon carbide (SiC) crystal grown via physical vapor transport, weighing over 2.5 grams, supplied in ingot form before slicing into wafers. This cultured crystal is not an optical element and is classified under heading 38.24.
Silicon Ingot for Power Semiconductor Slicing
Monocrystalline silicon ingot produced by the Czochralski process, weighing over 2.5 grams, for high-voltage power diode wafer production. This cultured crystal is not an optical element and falls under heading 38.24.
Silicon Ingot for Semiconductors
High-purity monocrystalline silicon ingot cultured via the Czochralski method, weighing more than 2.5 grams, used as raw material for wafer slicing. This cultured crystal is not an optical element and is classified under heading 38.24.
Synthetic Sapphire Boule
Large single-crystal synthetic sapphire boule weighing over 2.5 grams, used in electronics and optics manufacturing. This cultured crystal is not an optical element and falls under heading 38.24.
UV Curable Photoinitiator Emulsion
This aqueous emulsion of triphenyl sulfonium chloride derivatives is used as a photoinitiator in UV-curable inks and coatings for electronics manufacturing. It is classified under tariff item 3824.99.00 due to its precise composition of the specified sulfonium chlorides.
YAG Crystal Boule
Yttrium Aluminum Garnet (YAG) single crystal boule grown by the Czochralski process, weighing over 2.5 grams, for laser rod production. This cultured crystal is not an optical element and is classified under heading 38.24.
Yttrium Aluminum Garnet (YAG) Ingot for Laser Rods
Doped Yttrium Aluminum Garnet (YAG) crystal ingot grown by the Czochralski method, weighing over 2.5 grams, for Nd:YAG solid-state laser rods. This cultured crystal is not an optical element and is classified under heading 38.24.