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Rust Converter Pickling Primer

Rust Converter Pickling Primer is a tannic acid-based solution that converts rust into a stable iron tannate layer on structural steel. It is applied before painting to prepare the metal surface, functioning as a pickling preparation. This product is classified under tariff item 3810.10.00 as a pickling preparation for metal surfaces.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—Free

Alternative Classifications

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

3208.90.10Same rate: Free

If the product is primarily a paint or coating rather than a surface preparation

Paints and varnishes based on other polymers dispersed in a non-aqueous medium may apply if the product's main function is protective coating.

3824.99.00Same rate: Free

If the product is a general rust treatment not specifically for pickling before painting

Other chemical products not elsewhere specified may cover rust converters with broader applications.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Ensure the product is labeled with its chemical composition, as tannic acid content may be subject to import controls

• Provide a certificate of analysis to CBSA to confirm the product's function as a pickling preparation

• Check if the primer meets Canadian VOC regulations for coatings

Related Products under Tariff item 3810.10.00

Aluminum Brazing Flux Paste

Aluminum brazing flux paste, chloride-free, formulated for torch brazing aluminum heat exchangers in automotive radiators. It contains fluorides that remove the aluminum oxide layer during brazing, qualifying as an auxiliary preparation for soldering or brazing under tariff item 3810.10.00.

Brass Brazing Paste with Silver

Brass brazing paste alloyed with silver, used for plumbing fittings and marine hardware. It consists of metal powders suspended in a flux binder, providing high fluidity for capillary action, and falls under tariff item 3810.10.00 as a brazing paste of metal and other materials.

Citric Acid Stainless Steel Passivation Gel

Citric acid-based thixotropic gel for passivating stainless steel welds and surfaces, removing free iron without chlorides. It acts as a pickling preparation that restores the chromium oxide layer, meeting the description of tariff item 3810.10.00.

Copper Phosphorus Brazing Paste

Self-fluxing copper-phosphorus brazing paste for copper-nickel heat exchanger tubes, containing 7% phosphorus for fluxing during brazing at 700-850°C. It is a brazing paste of metal with auxiliary material, classifiable under tariff item 3810.10.00.

Electroless Nickel Plating Accelerator

An Electroless Nickel Plating Accelerator is a fluoride-palladium solution used to activate metal surfaces before electroless nickel plating. It removes passive oxide films, ensuring proper adhesion of the nickel layer. This product falls under tariff item 3810.10.00 as a pickling preparation for metal surfaces.

Hardfacing Welding Powder Alloy 600

Hardfacing Welding Powder Alloy 600 is a nickel-chromium alloy powder used in plasma transferred arc welding to deposit wear-resistant coatings on valve components. It consists of metal powders and other materials, making it classifiable under tariff item 3810.10.00 as a welding powder. The alloy provides corrosion and wear resistance in demanding industrial applications.