Strontium Aluminate Phosphor from Mexico
Strontium aluminate (SrAl2O4:Eu,Dy) doped with europium and dysprosium is a long-persistence luminescent powder for glow-in-the-dark paints. Classified in HTS 2841.90.40.00 as chemically defined aluminate per Chapter 28 notes, excluding luminophores only if organic (3206). Used in safety signage.
Duty Rate — Mexico → United States
3.1%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Certificate of luminescence duration (>10hrs) and dopant levels; REACH compliance for rare earths
• Pitfall: mixtures >50% binder reclassify to 3208
• Safe storage from moisture essential