Azelaic Acid Dimethyl Ester from Mexico
Dimethyl azelate, the dimethyl ester of azelaic acid, serves as a chemical intermediate for polymer synthesis and corrosion inhibitors. It qualifies for HTS 2917.13.00.90 as an 'other' ester of acyclic polycarboxylic acids (azelaic/sebacic), being a separate chemically defined compound per Chapter 29 note (a).
Duty Rate — Mexico → United States
4.8%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Submit NMR spectrum verifying azelate ester structure; impurities >2% may trigger 'mixture' reclassification
• Declare CAS number 627-93-0 explicitly on commercial invoice for CBP verification
• For drum quantities, ensure UN-approved packaging with proper sebacic/azelaic ester hazard labeling