Carboxymethylcellulose Sodium USP Grade from Mexico
Pharmaceutical-grade sodium carboxymethylcellulose used in eye drops and tablet binders, supplied as a fine white powder. Classified under HTS 3912.31.00 for carboxymethylcellulose salts in primary forms, not further processed into articles.
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 FDA Drug Master File or USP certificate; test for viscosity and degree of substitution to match subheading specs; avoid bulk packaging over 25kg to prevent 'article' reclassification