2,2-Bis((4-cyanatophenyl)propane from Japan
Also known as bisphenol A dicyanate, this compound is explicitly named in HTS 2929.90.0500 and consists of two 4-cyanatophenyl groups linked by an isopropylidene bridge. It functions as a reactive monomer for cyanate ester thermoset resins widely used in electronics and structural composites. Classification under 'other nitrogen function' reflects the cyanato group's defining chemical characteristic.
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
• Submit NMR or HPLC certificates verifying identity as the exact bisphenol A dicyanate isomer listed
• Declare any polymerization inhibitors separately to prevent mixture classification under chapter 38
• Ensure packaging prevents premature curing, as heat/pressure could alter product state