4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
Other organo-inorganic compounds: > Other: > Aromatic: > 4,4'-Diphenylbisphosphonous acid, di(2',2",4',4"-di-tert-butyl)phenyl ester
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Products classified under HTS 2931.90.10.00
4,4'-Diphenylbisphosphonous Acid Di(2',2",4',4"-di-tert-butyl)phenyl Ester
This is a specific aromatic organo-inorganic compound containing phosphorus directly linked to carbon atoms, classified under HTS 2931.90.10.00 as a named product in the 'Other' category of organo-inorganic compounds. It is used primarily as a stabilizer and antioxidant in polymer processing and high-performance plastics.
Irgafos 126 Stabilizer (4,4'-Diphenylbisphosphonous Acid Derivative)
Commercial-grade Irgafos 126, chemically 4,4'-diphenylbisphosphonous acid di(2',2",4',4"-di-tert-butyl)phenyl ester, used as a phosphite antioxidant in polypropylene and polyethylene resins. Falls under HTS 2931.90.10.00 as the specifically named aromatic organo-inorganic compound with phosphorus-carbon bonds.
Doverphos S-480 Phosphite Ester Antioxidant
Doverphos S-480 is the trade name for 4,4'-diphenylbisphosphonous acid di(2',2",4',4"-di-tert-butyl)phenyl ester, a high-performance secondary antioxidant for polyolefin processing. Classified specifically under HTS 2931.90.10.00 as the named aromatic organo-inorganic phosphorus compound per Chapter 29 hierarchy.
Phosphonous Acid Bis(2,4-di-tert-butylphenyl) Ester Derivative
Technical-grade phosphonous acid derivative matching 4,4'-diphenylbisphosphonous acid di(2',2",4',4"-di-tert-butyl)phenyl ester specification, used in nylon and engineering plastics stabilization. HTS 2931.90.10.00 covers this exact aromatic organo-inorganic structure with direct P-C bonds.