Isodecyl Diphenyl Phosphite from Japan
Isodecyl diphenyl phosphite functions as a hydrolysis stabilizer in polyurethane formulations. Classified as a phosphite ester under HTS 2920.29.00.00.
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
• Include GC-MS chromatogram showing characteristic phosphite P-O-C peaks
• PU industry end-use letters support proper classification over polymer additives
• Refractive index specification prevents substitution with phosphate esters