Thorium Hydroxide Precipitate from Canada
Th(OH)4 gelatinous precipitate from thorium nitrate digestion, purified for mantle production. As chemically defined thorium compound, HTS 2844.30.50 applies. Washed and calcined to ThO2.
Duty Rate — Canada → United States
5%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Maintain pH records from precipitation; use filter-press compatible packaging; specify Th-232 content