Sodium Carboxymethyl Cellulose (CMC) from Mexico
Sodium carboxymethyl cellulose is a water-soluble derivative of cellulose, a natural polysaccharide, produced through chemical modification with sodium hydroxide and monochloroacetic acid. It falls under HTS 3913.90.20 as a polysaccharide derivative in primary form, used as a thickener in food, pharmaceuticals, and detergents.
Duty Rate — Mexico → United States
15.8%
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
• Verify purity and degree of substitution via certificate of analysis to confirm classification as a primary form polysaccharide derivative
• Ensure documentation specifies 'in primary forms' (e.g
• powder, not formulated products) to avoid reclassification