Zinc Naphthenate Anti-Corrosion Primer Additive
Zinc naphthenate, a water-insoluble metal salt of naphthenic acids, serves as a rust-inhibiting additive in industrial primers and paints. Classified under HTS 3824.99.7550 for other naphthenic acid salts used in protective coatings. It provides durable corrosion resistance on metal surfaces in automotive and marine sectors.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily fatty acid salts other than naphthenic
Different carboxylic acid origins (e.g., oleic) direct to other fatty acid salt subheadings.
If formulated as synthetic paint driers
Finished paint/varnish preparations, even with naphthenates, may classify under Chapter 32.
If for non-naphthenic industrial additives
General chemical mixtures without specified naphthenic composition use broader 'other' codes.
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Import Tips & Compliance
• Document metal salt purity and insolubility in water via lab analysis to support classification
• Comply with TSCA pre-notification for new chemical uses; declare as chemical preparation on entry
Related Products under HTS 3824.99.75.50
Cobalt Naphthenate Catalyst for Polyester Resins
Cobalt naphthenate serves as an accelerator in unsaturated polyester resin curing for fiberglass composites. As a water-insoluble naphthenic acid salt, it fits HTS 3824.99.7550 for other such preparations. Used in boat building, automotive parts, and corrosion-resistant tanks.
Lead Naphthenate High-Temperature Lubricant Additive
Lead naphthenate provides extreme pressure protection in high-temperature greases and metalworking fluids as a naphthenic acid salt. HTS 3824.99.7550 includes such industrial water-insoluble salts. Applied in forging, drawing, and heavy machinery.
Calcium Naphthenate Rubber Vulcanization Accelerator
Calcium naphthenate accelerates sulfur vulcanization in tire and rubber compound production as a naphthenic metal salt. Falls under HTS 3824.99.7550 for other such preparations in polymer processing. Improves cure rate and scorch safety.
Naphthenic Acid Methyl Ester Biodiesel Solvent
Methyl esters of naphthenic acids used as co-solvents in biodiesel production to improve cold flow properties. Classified as HTS 3824.99.7550 other naphthenic esters for fuel applications. Derived from tall oil naphthenates via transesterification.
Iron Naphthenate Catalyst for Olefin Polymerization
Iron naphthenate functions as a single-site catalyst precursor in late-transition metal olefin polymerization for polyethylene production. HTS 3824.99.7550 covers other naphthenic salts in petrochemical catalysis. Enables branched polymer architectures.
Sodium Naphthenate Flotation Collector
Despite subheading focus on water-insoluble salts, sodium naphthenate (soluble variant) is sometimes included; used as ore flotation collector in mineral processing. HTS 3824.99.7550 for other naphthenic preparations in mining. Selectively floats copper/molybdenum sulfides.