Ulexite Calcium Borate
Ulexite calcium borate, known as TV rock, is a hydrated sodium calcium borate mineral (NaCaB5O6(OH)6·5H2O) that appears fibrous and translucent, sourced from boron-rich lake beds. It is classified under tariff item 2528.00.00 as a natural borate not from brine.
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 |
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.
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
• Confirm the ulexite is not separated from natural brine, as that would exclude it
• Declare the mineral's natural state and any concentration methods
• Keep records of the deposit origin for CBSA verification
Related Products under Tariff item 2528.00.00
Anhydrous Borax Concentrate
Anhydrous borax concentrate produced by calcining natural tincal or kernite ores, resulting in dehydrated sodium borate suitable for welding fluxes. This product falls under tariff item 2528.00.00 as a calcined natural borate derived from solid mineral deposits, not from natural brine.
Anhydrous Borax Natural Concentrate
Anhydrous borax natural concentrate is derived from natural sodium borate deposits and calcined to remove water, for use in detergents and enamels. It falls under tariff item 2528.00.00 as a natural borate not from brine, with H3BO3 under 85% on dry weight.
Calcined Colemanite Borate Concentrate
Calcined colemanite borate concentrate is a naturally occurring calcium borate mineral processed by heating to remove water, used primarily in glass and ceramic manufacturing. It falls under tariff item 2528.00.00 as a calcined natural borate concentrate.
Calcined Colemanite Borate Ore
Calcined colemanite ore, a naturally occurring calcium borate mineral mined in Turkey, processed by heating to remove moisture while preserving borate content. It is classified under tariff item 2528.00.00 as a natural borate concentrate, not separated from brine.
Calcined Sodium Borate Flux Grade
Calcined sodium borate flux grade, a concentrate of natural sodium borates processed for use as a flux in glassmaking and enameling industries. This product falls under tariff item 2528.00.00 as a calcined natural sodium borate from mineral sources, not brine.
Calcined Tincal Borate Concentrate
Calcined tincal borate concentrate, heat-treated natural borax for soldering fluxes and heat-resistant alloys. It is included in tariff item 2528.00.00 as a calcined form of natural sodium borate from solid mineral deposits.