Carboxymethylcellulose Sodium Salt Granules (High Purity) from Mexico
Granular form of carboxymethylcellulose sodium salt exceeding 90% CMC by weight, ideal for pharmaceutical tablet binders. Classified in HTS 3912.31.00.10 for its primary form and high CMC purity meeting subheading note (a) criteria. Not chemically modified beyond etherification.
Duty Rate — Mexico → United States
16.4%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include FTIR or HPLC test reports confirming 90%+ CMC; label as 'primary form' to prevent confusion with downstream products
• Common pitfall: incorrect HS declaration leading to 3912.39 duties