Xylene Sulfonic Acid from Mexico
Xylene sulfonic acid mixture (ortho/para/mixed isomers) is an aromatic sulfonic acid per HTS 2904.10.32.00. Widely used as catalyst and hydrotrope base.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Specify isomer ratio (typically 60% para) in COA
• pH 1-2 confirms acid strength for classification
• Stabilize against oxidation with trace inhibitors