Purple K Potassium Bicarbonate Fire Extinguisher Powder from Mexico
High-performance dry chemical powder (KHCO3-based) for Class B/C fire extinguishers, known for superior metal fire suppression. Classifies in HTS 3813.00.5000 as specialized fire extinguisher preparation. Popular in aviation and industrial settings.
Duty Rate — Mexico → United States
13.7%
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
• FAA approval required for aircraft use; provide TSO documentation for aviation imports
• Test for moisture content (<0.1%) to prevent caking; include sieve analysis certificates
• Avoid 2836 classification by proving suppressant formulation exceeds plain chemical salts