HTS code 9902.08.87 covers "Organic luminescent pigments and dyes for security applications (provided for in subheading 3204.90.00), the foregoing excluding daylight fluorescent pigments and dyes and excluding the dyestuff bearing the CAS No. 6359-10-0" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.