Zinc Chromate Hydrate from Mexico
Hydrated zinc chromate (ZnCrO4·3.5H2O) is a standard corrosion-inhibiting pigment for galvanized steel primers. It is a chemically defined zinc chromate under HTS 2841.90.4500, distinguished from oxides by chromate anion structure. Imported in moisture-proof bags as yellow crystals.
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
• Include water content specs (<1% free moisture) to prevent reclassification as solution (Chapter 28 exclusions)
• Certify RoHS exemption for chromate use in industrial coatings
• Use ISPM-15 compliant pallets; chromate dust poses phytosanitary risks