High-Purity Lanthanum-Cerium-Free Carbonate Blend from Japan
Refined mixture of lanthanum-rich rare-earth carbonates (no cerium), applied in optical glass polishing and phosphors, chemically defined per Chapter 28 Note 1. HTS 2846.90.80.70 applies as 'other mixtures of rare-earth carbonates' with lanthanum predominant. Supplied as 99%+ purity powder.
Duty Rate — Japan → United States
3.7%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include purity certificates and SDS for customs; watch for anti-dumping duties on Chinese origins
• Pitfall: confusing with lanthanum salts of inorganic acids (2815.20)