Pharmaceutical Ammonium Carbonate Crystals from Mexico
High-purity ammonium carbonate crystals used in pharmaceutical formulations as a buffering agent and expectorant. It qualifies for HTS 2836.99.30.00 as commercial ammonium carbonate with carbamate, meeting Chapter 28 definitions for inorganic carbonates of ammonium. USP-grade ensures compliance for medicinal use.
Duty Rate — Mexico → United States
11.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide USP or NF certificates of analysis to prove pharmaceutical grade and avoid reclassification
• Declare intended medicinal end-use to comply with FDA import alerts for drug precursors