Glyoxal Anhydrous Crystals from Mexico
Anhydrous glyoxal in crystalline form (hydrate-free) for specialty polymer synthesis. Pure CHOCHO classified specifically under HTS 2912.19.30.00 as acyclic aldehyde without other oxygen function. Rare form due to polymerization tendency during storage.
Duty Rate — Mexico → United States
13.7%
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
• Provide polymerization inhibitor analysis (<0.1%) to confirm anhydrous stability per Chapter 29 stabilizer provisions
• Declare crystal water content (<0.5%) via Karl Fischer titration to distinguish from aqueous solutions
• Special UN-approved packaging required for self-reactive substances