Industrial CMC Viscosifier Grade from Mexico
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 — Mexico → United States
6.4%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 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