Chromium Potassium Sulfate Dodecahydrate from Mexico
This double salt, KCr(SO4)2·12H2O, is a chrome alum used in analytical chemistry and trivalent chromium plating baths. It qualifies under HTS 2833.29.40.00 as a sulfate of chromium, though borderline with 2842 for complex salts. Its violet crystals are standard in lab reagents.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide crystallographic data or formula confirmation to distinguish from true double salts in 2842
• For lab imports, include end-use statements to avoid industrial chemical scrutiny