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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+35.0%38.7%
🇲🇽Mexico3.7%+10.0%13.7%
🇨🇦Canada3.7%+10.0%13.7%
🇩🇪Germany3.7%+10.0%13.7%
🇯🇵Japan3.7%+10.0%13.7%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3815.11.00.00Lower: 35% vs 38.7%

If supported catalysts for specific reactions

Carriers with catalytically active substances classify in 3815.

3824.99.39Lower: 35% vs 38.7%

If non-naphthenic polymerization catalysts

Different ligands/carboxylates use other metal salt codes.

2853Lower: 12.8% vs 38.7%

If other precious metal catalysts

Precious metal content dominates over naphthenate.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Air-sensitive packaging; inert atmosphere certs for activity retention

Not 3815—specific olefin catalysts stay chemical preparations

Patent status affects distribution; DEA if dual-use

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.

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.

Rare Earth Naphthenate Lamp Additive

Cerium/lanthanum naphthenates dope high-intensity discharge lamps for improved color rendering and efficiency. Water-insoluble salts under HTS 3824.99.7550 as other naphthenic preparations. Used in metal halide and sodium vapor lighting.