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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If prepared as metalworking lubricant base
Finished lubricating preparations classify in Chapter 34.
If for lead soaps of other acids
Non-naphthenic lead carboxylates use fatty acid salt provisions.
If other inorganic lead salts
Inorganic salts without organic acid moiety go to Chapter 28.
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Import Tips & Compliance
• TSCA Section 6(h) restrictions on lead content—pre-1978 inventory check required
• Full elemental analysis; declare as 'naphthenate salts' not 'lubricants' (2710/3403)
• EU REACH alignment aids FDA entry if food-grade claimed
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.
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.
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.