Sodium Carbonate Monohydrate (Crystal Soda) from Mexico
Sodium carbonate monohydrate (Na2CO3·H2O) is a crystalline hydrated form of disodium carbonate used in water treatment and as a pH buffer. It qualifies for HTS 2836.20.00.00 as chemically defined disodium carbonate, including common hydrates.
Duty Rate — Mexico → United States
11.2%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include water of crystallization proof via assay reports; hydrate forms must not exceed stability limits to avoid reclassification
• Comply with TSCA import notifications for chemical substances