Industrial Grade Naphthenic Acid 75%
High-purity naphthenic acid derived from petroleum distillates, primarily used as a corrosion inhibitor and paint drier in industrial formulations. Classified under HTS 3824.99.7510 as pure naphthenic acids, distinct from their salts or esters. Their carboxylic acid structure enables metal complexing for anti-corrosion applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with solvents or additives
Formulations containing naphthenic acids with other components fall under residual chemical preparations.
If primarily petroleum oil residue
Petroleum-derived acids mainly consisting of oils are classified in Chapter 27, not chemical preparations.
If highly refined cyclic carboxylic acid
Purified cycloaliphatic monocarboxylic acids may shift to specific organic acid headings.
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Import Tips & Compliance
• Obtain Safety Data Sheets (SDS) confirming naphthenic acid purity >75%; declare exact acid value and origin from crude oil
• Avoid misclassification as mixtures by ensuring no added solvents
• Comply with TSCA registration for new chemical importers
Related Products under HTS 3824.99.75.10
Refined High Acid Number Naphthenic Acid
Distilled naphthenic acid with acid number 200-250 mg KOH/g, used in metalworking fluids and rubber additives. Falls under HTS 3824.99.7510 as their water-insoluble salts are separately classified. Key for emulsifiers in oil-based formulations.
Low Odor Naphthenic Acid for Paint Driers
Specially processed naphthenic acid with minimized odor for use in alkyd paint driers and inks. HTS 3824.99.7510 covers the pure acid form before salt formation. Provides essential carboxylic functionality for metal soap production.
Technical Grade Naphthenic Acid (60% Assay)
Standard technical naphthenic acid at 60% minimum assay from heavy petroleum distillates, for wood preservatives and fuel additives. Pure acid classification under 3824.99.7510 excludes formulated products. Versatile for salt formation and emulsification.
Distilled Naphthenic Acid for Rubber Accelerator
Fractionally distilled naphthenic acid for rubber vulcanization accelerators and plasticizers. HTS 3824.99.7510 specifically identifies the acid before reaction with amines or metals. Narrow boiling range ensures processing consistency.