Pharma-Grade Cross-Linked CMC from Canada
Cross-linked sodium carboxymethylcellulose for controlled-release drug matrices. Still primary polymer under HTS 3912.31.00.90 as chemically modified CMC salt per subheading note (a)(3). Imported for advanced pharma applications.
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
• Molecular weight and cross-link density docs justify 'Other' CMC classification
• GMP manufacturing certs speed FDA review
• Not for retail sale per 3921 size note limits