Rubidium Carbonate from Mexico
Rubidium carbonate, a rare alkali metal salt, is used in specialty glass, fireworks, and research applications. It qualifies under HTS 2836.99.50 as other carbonates of inorganic bases (rubidium). High purity grades support ion-selective applications.
Duty Rate — Mexico → United States
3.7%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Rare chemical; provide origin certificates and purity assays for valuation
• TSCA reporting mandatory; declare research vs commercial end-use