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Triphenyl Phosphite from China

Triphenyl phosphite serves as a stabilizer and antioxidant in polymer processing. Technically a phosphite ester (P(OR)3) but classified under HTS 2920.90.2000 as aromatic ester of phosphorous acid per HTS structure. Chemically defined with CAS 101-02-0.

Duty Rate — China → United States

44%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Distinguish from triphenyl phosphate; phosphite stabilizers oxidize to phosphates during use

Provide polymer processing end-use documentation to support classification

Triphenyl Phosphite from China — Import Duty Rate | HTS 2920.90.20.00