Flash-Calcined Aluminum Hydroxide (Adsorbent) from Japan
Flash-calcined aluminum hydroxide is produced by rapidly heating aluminum hydroxide to drive off partial water content, creating a high-porosity material that serves as a precursor to activated alumina. It retains more than 50% hydroxide content, which qualifies it for classification under tariff item 2818.30.00 as aluminum hydroxide rather than as aluminum oxide. This product is commonly used in gas and liquid adsorption applications, including dehydration processes.
Duty Rate — Japan → Canada
Import Tips
• Ensure the hydroxide content exceeds 50% after flash calcination to support classification under 2818.30.00; provide lab analysis if requested by CBSA
• Declare the product's end use (e.g
• adsorption) to avoid misclassification as aluminum oxide
• Keep records of the calcination process parameters in case of a tariff verification