Industrial CMC Viscosifier Grade from Canada
Industrial-grade carboxymethylcellulose sodium serves as a viscosifier in oil drilling fluids and ceramics. It qualifies for HTS 3912.31.00.90 as other CMC salts in primary powder form per chapter polymer classification rules. Essential for high-viscosity applications in manufacturing.
Duty Rate — Canada → United States
16.4%
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 viscosity specs and substitution degree in docs to distinguish from lower-grade 'Other' celluloses
• Avoid bulk packaging over retail limits to stay out of 3923; use industrial drums