Citric Acid Passivation Solution from Mexico
Chelated citric acid solution for stainless steel passivation after pickling operations. Classified HTS 3810.90.5000 as metal surface preparation following pickling, restoring chromium oxide layer. Environmentally friendly nitric acid replacement.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Passivation time/temp specs per ASTM A967 validate metal prep use
• Biodegradable claims require OECD 301 testing documentation
• 4-10% concentration range prevents food additive reclassification