Other
Prepared binders for foundry molds 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: > Other: > Other: > Other: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Subheadings
Products classified under HTS 3824.99.93
Anti-Freeze Coolant Mixture
A glycol-based preparation used in automotive cooling systems to prevent freezing and boiling. Classified under 3824.99.93 as a chemical preparation of the allied industries not elsewhere specified, distinct from pure petroleum oils. It contains corrosion inhibitors and water.
Hydraulic Brake Fluid DOT 4
Synthetic glycol-ether based fluid for hydraulic brake systems in vehicles, meeting DOT 4 specifications. Falls under 3824.99.93 as a chemical preparation from allied industries, not pure oils or elsewhere specified. Provides high boiling point and moisture resistance.
Metal Pickling Liquor Preparation
Acid-based mixture with inhibitors for cleaning metal surfaces during pickling processes in manufacturing. Classified in 3824.99.93 as a chemical preparation not elsewhere specified, used in allied metal industries. Prevents excessive corrosion during descaling.
Foundry Core Binder Resin Mix
Phenolic resin-based binder combined with catalysts for sand cores in metal casting. Under 3824.99.93 as other chemical preparations, distinguished from pure binders in 3824.50. Falls in allied foundry industries.
Water Treatment Biocide Blend
Mixture of glutaraldehyde and quaternary ammonium compounds for controlling microbes in cooling towers. HTS 3824.99.93 covers this unspecified chemical preparation for industrial water systems. Prevents biofouling without restricted pesticide substances.
Concrete Admixture Plasticizer
Polycarboxylate ether-based superplasticizer for improving concrete workability and strength. Classified 3824.99.93 as chemical preparation for construction industry, not elsewhere specified. Reduces water content without strength loss.
Electroless Plating Bath Solution
Chemical bath containing nickel salts, hypophosphite reducer, and stabilizers for plating without electricity. 3824.99.93 as allied industry preparation for metal finishing. Enables uniform coatings on plastics and metals.
Polymer Emulsion Thickener
Acrylic copolymer emulsion used to increase viscosity in paints and coatings. Under 3824.99.93 as unspecified chemical preparation for allied industries. Provides shear-thinning rheology for application.
Flux for Brazing Alloys
Chloride-free boric acid-borate mixture for high-temperature brazing of copper alloys. 3824.99.93 covers this soldering preparation not specified elsewhere. Removes oxides during joining.
Die Casting Lubricant Concentrate
Graphite-water based concentrate diluted for mold release in aluminum die casting. Classified 3824.99.93 as chemical preparation for foundry allied processes. Prevents sticking and cools dies.
PCB Etchant Solution
Ammonium persulfate-based mixture with sulfuric acid for etching copper from circuit boards. 3824.99.93 as electronics manufacturing chemical preparation. Selective copper removal for PCB fabrication.
Textile Dye Fixative
Cationic polymer preparation to improve wash fastness of reactive dyes on cotton. Under 3824.99.93 as auxiliary chemical for textile allied industry. Crosslinks dyes to fabric fibers.
Battery Electrolyte Additive
Sulfuric acid expander mixture with lignosulfonate for lead-acid battery plates. 3824.99.93 chemical preparation for battery manufacturing. Improves cycle life and capacity.
Ceramic Slip Deflocculant
Sodium polyacrylate solution to disperse clay particles in ceramic casting slips. Classified 3824.99.93 for ceramics industry preparation. Reduces viscosity for molding.
Welding Rod Coating Binder
Sodium silicate-water glass mixture for binding flux coatings on welding electrodes. 3824.99.93 as preparation for welding allied industry. Provides arc stability and slag protection.