Formic Acid for Dye Vat Neutralization from Mexico
90% formic acid for pH control in reactive dye baths, classified HTS 2915.11.00.00 as saturated monocarboxylic acid. Critical for color fixation on cellulosic fibers in textile wet processing.
Duty Rate — Mexico → United States
15.5%
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
• Document dye class compatibility (reactive/direct); prevents 3204 confusion
• Monitor iron content (<10ppm) for dye bath purity requirements