Unexpanded Perlite Rock from Canada
Crude perlite ore in loose rock or granular form, unheated and unexpanded, directly from volcanic deposits. Falls under HTS 2530.10.00.00 as unexpanded perlite, a lightweight siliceous mineral used in filtration, insulation, and horticulture after expansion.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include assay reports showing amorphous silica content >70% to confirm perlite classification
• Declare as unexpanded to avoid duties on expanded forms; inspect shipments for accidental pre-heating
• Comply with EPA regulations if trace asbestos is present in natural deposits