Platinum Sponge on Asbestos-Free Support
High porosity platinum sponge on a synthetic fiber support, used for laboratory gas purification to remove trace impurities from hydrogen streams. This supported precious metal catalyst is classifiable under tariff item 3815.12.00. It accelerates purification reactions without being consumed.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the platinum sponge is not on a support and is a separate chemically defined compound
Chapter 38 excludes separate chemically defined compounds of precious metals.
If the support is not synthetic fiber but another material, and the catalyst is not precious metal-based
Other supported catalysts are covered under this subheading.
If the product is a complete gas purification apparatus, not just the catalyst
Machinery for filtering or purifying gases is classified in Chapter 84.
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
• Verify the synthetic fiber support is not a textile article of Chapter 59; the catalyst must be presented as a whole
• Provide proof of platinum content and support material for CBSA classification
• Check if the product is subject to controlled goods regulations if used in sensitive applications
Related Products under Tariff item 3815.12.00
Gold on Ceria Catalyst for Oxidation
Nanogold particles supported on cerium oxide, used for low-temperature CO oxidation in air purification systems. This supported catalyst is classified under tariff item 3815.12.00 because gold, a precious metal, is the active catalytic substance.
Gold on Titania Catalyst for CO Oxidation
Nanosize gold particles (2-5nm) supported on titanium dioxide (TiO2) for low-temperature carbon monoxide oxidation. This catalyst is used in air purification systems and fuel cell applications to remove CO from gas streams. It falls under tariff item 3815.12.00 because gold is a precious metal and the active substance is supported on a carrier.
Iridium Oxide on Carbon Catalyst
Iridium(IV) oxide nanoparticles supported on vulcan carbon black, used in polymer electrolyte membrane (PEM) fuel cells. This catalyst uses iridium, a precious metal compound, as the active substance on a carbon support. It falls under tariff item 3815.12.00 as a supported catalyst with precious metal compounds.
Iridium Oxide on Titania Catalyst
Iridium oxide nanoparticles supported on titanium dioxide, applied in electrochemical reactions and fuel cell technology. This supported catalyst falls under tariff item 3815.12.00 because iridium oxide, a precious metal compound, is the active substance.
Iridium Oxide Supported Catalyst for Hydrazine Decomposition
Iridium oxide supported on alumina or titania for catalytic decomposition of hydrazine in spacecraft propulsion systems. This aerospace-grade catalyst uses iridium, a precious metal, as the active substance on a support. It is classified under tariff item 3815.12.00 as a supported catalyst with precious metal compounds.
Mixed PGM on Ceria-Zirconia for TWC Front Bed
A Pd-Pt-Rh ternary precious metal catalyst on ceria-zirconia oxygen storage support for three-way converter front bed position. This multi-precious metal supported catalyst optimizes cold-start emissions performance in automotive applications. It falls under tariff item 3815.12.00 as a supported catalyst with precious metal compounds as the active substance.