Xylene Sulfonic Acid Mixture (Ortho/Meta/Para) from Japan
Mixed xylene sulfonic acids from sulfonation contain only sulfo groups on phenolic rings, classified as isomers under Chapter 29 note 1(b). HTS 2908.99.1500 for these defined sulfonated phenol derivatives.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Isomer distribution analysis (ortho:meta:para ratios); total sulfonic >92%
• Pitfall: Declaring as 'mixed isomers' risks Chapter 38 if purity documentation lacking