Cellulase Laundry Detergent Additive from Mexico
Cellulase enzymes enhance laundry detergents by removing cotton fuzz and color brightening. HTS 3507.90.70.00 covers this as other prepared enzymes, not as washing preparations of Chapter 34.
Duty Rate — Mexico → United States
10%
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
• Document low surfactant content (<10%) to avoid Chapter 34 detergent classification
• Specify 'pure enzyme concentrate' vs formulated detergent on commercial invoice
• Test for hardening per exclusion to rule out 3913 proteins