High-Purity Citric Acid for Metal Passivation from Mexico
Ultra-pure citric acid (99.9%) for metal surface passivation in aerospace and medical device manufacturing under HTS 2918.14.00.00. Acts as eco-friendly replacement for nitric acid in stainless steel treatment. Chemically defined compound with no disqualifying modifications.
Duty Rate — Mexico → United States
16%
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
• ASTM A967 compliance cert required for passivation end-use; iron content <5ppm
• NSF/ANSI 61 certification for water contact applications
• Small batch imports—ensure lot traceability for quality systems like ISO 13485