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3204.19.50.00/Fluorescent Brightener OB-1/Mexico

Fluorescent Brightener OB-1 from Mexico

Fluorescent Brightener OB-1 (CAS 1533-45-5) is a synthetic organic stilbene derivative used as an optical brightening agent in polyester fibers and plastics. Falls under HTS 3204.19.50.00 as other synthetic products used as fluorescent brightening agents per heading scope. Absorbs UV light and emits blue fluorescence for whiteness enhancement.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Provide fluorescence emission spectra (peaks at 430nm) and application data to confirm brightener function vs. regular dye

• Ensure not chemically defined as pure compound (Chapter 29 exclusion); commercial grade mixtures qualify here

Fluorescent Brightener OB-1 from Mexico — Import Duty Rate | HTS 3204.19.50.00