Chapter 3809 — Customs Tariff Headings

Amylaceous Paper Sizing Compound

A starch-based sizing agent applied to paper surfaces during manufacturing to improve surface strength and printability. It forms a protective film that prevents fiber swelling and ink feathering. This product is classified under tariff item 3809.10.00 as an amylaceous finishing agent for the paper industry.

Cornstarch Fabric Dressing Emulsion

A liquid emulsion dressing made from cornstarch used to stiffen and protect cotton fabrics during garment manufacturing. It provides temporary body and crispness to collars and cuffs. This product falls under tariff item 3809.10.00 as an amylaceous-based finishing preparation for textiles.

Modified Corn Starch Leather Filler

A filler paste with modified corn starch used for correcting leather surface defects during upholstery finishing. It levels scratches and fills pores before dyeing. This product is classified under tariff item 3809.10.00 as an amylaceous leather finishing preparation.

Potato Starch Leather Finishing Cream

A cream formulation with a potato starch base applied to leather surfaces for filling and smoothing during finishing operations. It creates a uniform grain pattern and enhances dye penetration. This product is classified under tariff item 3809.10.00 for amylaceous leather finishing preparations.

Rice Starch Textile Softener Paste

A paste softener with a rice starch base applied during textile finishing to impart a natural hand and drape to delicate fabrics. It reduces harshness without silicone additives. This product is classified under tariff item 3809.10.00 for amylaceous textile finishing agents.

Sago Starch Paper Glazing Agent

A glazing agent based on sago starch applied to specialty papers for envelope and label production. It creates a smooth writing surface and prevents fiber pick. This product is classified under tariff item 3809.10.00 as an amylaceous paper finishing preparation.

Starch-Based Textile Finishing Agent

A finishing agent with a starch (amylaceous) base used to impart a smooth, glossy finish to woven fabrics during textile processing. It enhances fabric handle and appearance without affecting dye uptake. This product is classified under tariff item 3809.10.00.

Starch Textile Mordant Preparation

A mordant formulation with a starch base that helps fix natural dyes to cellulose fibers in textile dyeing processes. It improves color fastness and prevents dye migration during washing. This product is classified under tariff item 3809.10.00 as an amylaceous mordant for textiles.

Tapioca Starch Fabric Stiffener

A concentrated stiffener derived from tapioca starch used on lightweight summer fabrics and lace for apparel manufacturing. It provides temporary body removable by washing. This product meets the amylaceous basis criteria of tariff item 3809.10.00.

Wheat Starch Paper Coating Binder

A binder solution based on wheat starch used in pigment coating formulations for high-quality printing paper. It improves ink holdout and paper gloss. This product falls under tariff item 3809.10.00 as an amylaceous finishing preparation for paper.

Anti-Migrating Agent for Dyeing

An anti-migrating agent used in textile dyeing, this hydrophilic thickener prevents dyes from migrating to fabric surfaces during slow drying of package-dyed yarns, ensuring level dyeing results. It is a finishing auxiliary specifically formulated for textile applications, falling under tariff item 3809.91.00 for products used in the textile or like industries.

Anti-Pilling Agent for Knitted Fabrics

An enzyme-based preparation that modifies the fiber surface of knitted fabrics to prevent pilling during wear, this product is applied during wet processing in textile mills. It is a finishing agent specifically designed for the textile industry, qualifying under tariff item 3809.91.00.

Bio-Polishing Enzyme for Denim Fabrics

A cellulase enzyme preparation used in bio-washing processes to remove protruding fibers from denim fabrics, creating a smooth surface without sanding. This product is applied exclusively in textile finishing, making it classifiable under tariff item 3809.91.00 for textile industry preparations.

Cotton Yarn Sizing Compound

A warp sizing compound for cotton yarns, this polyvinyl alcohol and starch blend is compounded with lubricants to provide abrasion resistance during high-speed weaving. It is a textile preparation used before weaving, qualifying under tariff item 3809.91.00 as a product of a kind used in the textile industry.

Dye Fixing Agent for Synthetic Fibers

A cationic polymer-based preparation that binds reactive dyes to polyester and nylon fabrics, preventing color bleeding during washing. Used in high-temperature dyeing processes in textile mills, this dye fixing agent falls under tariff item 3809.91.00 as a textile finishing auxiliary.

Fabric Handle Modifier Concentrate

A reactive polyurethane dispersion that chemically bonds to fibers, permanently modifying the tactile properties of knitted sportswear fabrics. Applied in finishing ranges, this fabric handle modifier is a textile finishing agent under tariff item 3809.91.00.

Flame Retardant Textile Finishing Bath

A phosphorus-nitrogen compound solution applied as a pad-dry-cure finish to impart flame resistance to cotton/polyester blend fabrics for curtains and upholstery. Used exclusively in textile finishing lines, this flame retardant finishing bath falls under tariff item 3809.91.00.

High-Temperature Dye Carrier for Polyester

An aromatic ester carrier that swells polyester fibers at 130°C dyeing temperatures, enabling disperse dye penetration without pressure equipment. Critical for polyester fabric dyeing, this high-temperature dye carrier is classified under tariff item 3809.91.00 as a textile dye carrier.

Mercerization Alkali Stabilizer for Cotton

A specialty additive that stabilizes caustic soda concentration during mercerization of cotton yarns, improving luster and dye uptake. Critical for premium cotton shirting production, this mercerization alkali stabilizer is used in textile wet processing and falls under tariff item 3809.91.00.

Reactive Dye Leveling Agent

A low-foaming dispersant that ensures even dye penetration and fixation on cellulose fibers during continuous dyeing ranges, preventing barré and skewing defects. This reactive dye leveling agent is an essential textile auxiliary under tariff item 3809.91.00.

Silicone Softener Emulsion for Terry Towels

An amino-functional silicone microemulsion that imparts a peach-skin handle to terry towel fabrics after dyeing, preventing yellowing during high-temperature curing. This silicone softener emulsion is a textile softener preparation under tariff item 3809.91.00.

Textile Finishing Agent for Cotton Fabrics

A water-based emulsion containing silicone polymers and wax used to impart water repellency and softness to cotton fabrics during finishing processes. This preparation accelerates dye fixation and enhances fabric handle, qualifying under tariff item 3809.91.00 as a textile finishing agent.

Textile Mordant for Natural Dyes

An aluminum acetate solution used to fix natural dyes like indigo and madder on wool and silk fabrics using traditional mordanting techniques. Revived for artisan textile production, this textile mordant preparation falls under tariff item 3809.91.00.

Wetting Agent for Textile Pretreatment

A low-foaming alkyl polyglycoside surfactant for scouring and bleaching preparatory processes on woven fabrics, reducing surface tension for complete wet-out. This wetting agent is a textile wetting preparation under tariff item 3809.91.00.

Wool Scouring Agent Preparation

A non-ionic surfactant blend with emulsifiers for removing lanolin and impurities from raw wool fibers before spinning. Essential in wool processing textile operations, this wool scouring agent preparation is classified under tariff item 3809.91.00.

AKD Wax Emulsifier for Paper Sizing

A cationic emulsifier for alkyl ketene dimer (AKD) wax used in paper sizing. It contains aromatic dispersing agents and is applied during paper production to impart water repellency, qualifying as a finishing preparation for the paper industry.

AKD Wax Emulsion Sizing Agent

An alkyl ketene dimer (AKD) wax emulsion used as a hydrophobic sizing agent in paper manufacturing to impart water resistance. It is a finishing preparation for the paper industry.

Alum Precipitating Aid

A polymeric coagulant aid used with papermaker's alum to enhance charge neutralization and precipitation. It improves retention and drainage, qualifying as a finishing preparation for the paper industry.

Aromatic Guar Gum Derivative for Paper

A hydroxypropyl guar derivative modified with aromatic quaternary groups, used as a dry strength additive and drainage aid in fine paper production. The aromatic content exceeds 5%, classifying it as a paper finishing preparation.

Aromatic PolyDADMAC Paper Retention Aid

A polyquaternary ammonium polymer with aromatic groups exceeding 5%, used as a retention and drainage aid in papermaking. It improves fiber and filler retention, qualifying as a finishing preparation for the paper industry.

Aromatic Rosin Sizing Emulsion

A water-based emulsion containing over 5% aromatic substances, used as a surface sizing agent in paper manufacturing. It controls ink penetration and improves print quality, making it a finishing preparation for the paper industry.

Benzyl Chloride Paper Fluorescent Brightener

A distyryl biphenyl derivative with benzyl chloride aromatic groups exceeding 5%, used as an optical brightening agent in paper production. It enhances whiteness, qualifying as a finishing preparation for the paper industry.

Cationic Starch Retention Aid

A modified cationic starch solution used in paper mills to improve fiber and filler retention during papermaking. It is a finishing preparation for the paper industry.

Creping Aid Release Agent

A modified polyethylene emulsion that facilitates tissue creping release from the Yankee dryer surface. It is a finishing preparation for the paper industry, enabling tissue softness and bulk.

Defoamer Silicone Emulsion for Paper

A silicone-based antifoam emulsion that controls foam generation in paper mill white water systems and size press applications. It is a finishing preparation for the paper industry.

Dry Strength Additive Polyacrylamide

An anionic polyacrylamide emulsion that increases paper dry tensile strength and burst resistance during sheet formation. It is a finishing preparation for the paper industry.

Formaldehyde-Free Paper Wet-Strength Resin

An aminoplast resin with aromatic modifiers exceeding 5% by weight, providing wet strength to specialty papers like filter paper and labels. It is a finishing preparation for the paper industry.

Modified Alkylphenol Paper Defoamer

A foam control agent with modified aromatic alkylphenols exceeding 5% by weight, formulated for pulp and paper production. It prevents foam formation during manufacturing, qualifying as a finishing preparation for the paper industry.

Modified Lignosulfonate Paper Dispersant

An aromatic-modified lignosulfonate with over 5% aromatics, used as a dispersant for fillers and pigments in paper coating colors and as a drainage aid. It qualifies as a finishing preparation for the paper industry.

Styrene-Acrylic Paper Coating Binder

A styrene-acrylic copolymer emulsion with high aromatic content (5%+), used as a binder in paper coating formulations for glossy magazine and packaging paper. It qualifies as a finishing preparation for the paper industry.

Acrylic Resin Finishing Compound for Leather

Acrylic Resin Finishing Compound for Leather is a water-based acrylic resin used as a topcoat on finished leather to provide gloss, abrasion resistance, and water repellency. It is specifically formulated for the leather industry, making it classifiable under tariff item 3809.93.00.

Aniline Derivative Leather Dressing Compound

Aniline Derivative Leather Dressing Compound is a preparation containing modified aniline compounds (over 5% aromatic) applied to finished leather for protection and shine in upholstery production. It is specifically formulated for the leather industry, making it classifiable under tariff item 3809.93.00 as a finishing agent of a kind used in leather or like industries.

Antifoam Agent for Leather Processing

Antifoam Agent for Leather Processing is a silicone-based defoamer preventing foam buildup in leather tanning drums and finishing operations. It is a process aid specifically for the leather industry, qualifying under tariff item 3809.93.00.

Benzene Derivative Leather Retanning Agent

Benzene Derivative Leather Retanning Agent is a phenolic resin-based retanning agent with over 5% benzene-derived aromatics, used for filling and firming leather during finishing. Its specific application in the leather industry qualifies it under tariff item 3809.93.00 as a preparation of a kind used in leather or like industries.

Chromium Tanning Agent for Leather

Chromium Tanning Agent for Leather is a synthetic chromium-based finishing agent used in the leather tanning process to cross-link collagen fibers, making leather durable and water-resistant. It is specifically for the leather industry, placing it under tariff item 3809.93.00.

Enzyme Preparation for Leather Bating

Enzyme Preparation for Leather Bating is a proteolytic enzyme blend for bating leather hides, removing non-fibrillar proteins for cleaner grain. It is essential for high-quality full-grain leather and is specifically for the leather industry, qualifying under tariff item 3809.93.00.

Leather Degreasing Emulsion

Leather Degreasing Emulsion is a surfactant-based emulsion for removing natural fats from raw hides before tanning, essential in leather preparation. It is specifically for the leather industry, qualifying under tariff item 3809.93.00 as a preparation of a kind used in leather or like industries.

Leather Dye Fixative

Leather Dye Fixative is a polymeric fixative that binds dyes to leather fibers, preventing crocking and improving wash fastness. It is applied in finishing wet-end processes and is specifically for the leather industry, placing it under tariff item 3809.93.00.

Leather Handle Modifier

Leather Handle Modifier is a synthetic wax and polymer blend that modifies leather touch from stiff to soft/supple during finishing. It is used for automotive and upholstery leathers, qualifying under tariff item 3809.93.00 as a preparation of a kind used in the leather industry.

Naphthalene-Based Leather Fatliquoring Agent

Naphthalene-Based Leather Fatliquoring Agent is a finishing agent used in leather tanning to lubricate and soften hides, containing over 5% naphthalene, an aromatic hydrocarbon. Its high aromatic content and specific application in the leather industry place it under tariff item 3809.93.00.

Naphthylamine Salt Leather Dye Carrier

Naphthylamine Salt Leather Dye Carrier is an accelerator containing naphthylamine salts (over 5% aromatic) to enhance dye penetration in heavy leathers. It is specifically designed for the leather industry, qualifying under tariff item 3809.93.00 as a preparation of a kind used in leather or like industries.

Phenylphenol Leather Preservative

Phenylphenol Leather Preservative is a biocidal finishing agent with phenylphenol (aromatic over 5%) to prevent mold growth on stored leathers. It is applied post-tanning for wet-blue or crust leather protection, making it classifiable under tariff item 3809.93.00 as a preparation of a kind used in the leather industry.

Styrene-Modified Leather Finishing Emulsion

Styrene-Modified Leather Finishing Emulsion is a water-based emulsion containing styrene copolymers (over 5% aromatics) for leather surface coating and protection. It provides scuff resistance and is specifically for the leather industry, qualifying under tariff item 3809.93.00.

Toluene Sulfonate Leather Wetting Agent

Toluene Sulfonate Leather Wetting Agent is a surfactant preparation with over 5% toluene-derived sulfonates used to improve leather penetration during dyeing and fatliquoring stages. Its specific application in the leather industry places it under tariff item 3809.93.00.