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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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