BIT 20N 2-Methyl-4-Isothiazolin-3-one Preservative from Mexico
20% 2-methyl-4-isothiazolin-3-one aqueous solution for metalworking fluid preservation. HTS 3808.99.3000 classification for specifically listed isothiazolinone biocides.
Duty Rate — Mexico → United States
10%
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
• Metalworking fluid compatibility testing; Biocide depletion rate documentation; Nitrite-free formulation certification