Phosphoric Acid Metal Descaling Paste from Mexico
Thick paste containing phosphoric acid for descaling and derusting aluminum and stainless steel surfaces in aerospace and automotive repair. Classified under 3810.10.00.00 due to its role as a pickling preparation that removes oxide layers from metal via chemical reaction. Applied by brush and rinsed off after treatment.
Duty Rate — Mexico → United States
15%
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
• Require phosphating process documentation to distinguish from general cleaners
• Ensure pH testing certificates to prove acidic pickling properties
• Package in corrosion-resistant containers to prevent shipping damage claims