Chrome Alum Crystals from Mexico
Chrome alum (chromium potassium sulfate, KCr(SO4)2·12H2O) is used in leather tanning and analytical chemistry. Falls under HTS 2833.30.00.00 as a trivalent metal alum double salt.
Duty Rate — Mexico → United States
11.6%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Handle as hazardous material due to chromium content; require EPA TSCA notification
• Confirm crystal structure via X-ray diffraction if disputed