Sodium Carboxymethylcellulose Powder (90%+ CMC) from Mexico
High-purity sodium carboxymethylcellulose (CMC) powder with at least 90% CMC content by weight, used as a thickener in food and pharmaceuticals. This primary form polymer falls under HTS 3912.31.00.10 due to its high carboxymethylcellulose concentration as per chapter notes on polymer classification. It is supplied in bulk for industrial formulation.
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
• Provide lab analysis certificates verifying ≥90% CMC content by weight to meet subheading requirements; declare intended end-use (food vs industrial) to avoid reclassification
• Watch for contamination risks in documentation for pharma imports