Boric Acid Crystals (H3BO3) from Mexico
Boric acid is a weak, monobasic Lewis acid of boron available in white, odorless crystals or powder form, used as an antiseptic and in fire retardants. It is explicitly classified under HTS 2810.00.00.00 as one of the boric acids per the heading description. Technical grade is common for industrial applications like glass fiber production.
Duty Rate — Mexico → United States
11.5%
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 assay reports showing boron content to distinguish from borates or other acids
• Label clearly as 'boric acid' to comply with TSCA import requirements and avoid pesticide regulations
• Check for REACH-like certifications if sourced from EU, as boric acid has reproductive toxicity classifications