Tris(nonylphenyl) Phosphite
Tris(nonylphenyl) phosphite (TNPP) is a high-temperature stabilizer for synthetic rubber compounds. Falls under HTS 2920.29.00.00 as an aromatic phosphite ester.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rubber vulcanization or compounding additive
Rubber accelerators and antioxidants classified under 3812.
If high free phenol content
Mixtures with >10% phenols classified by phenolic component.
If sulfurized phosphite variants
Organo-sulfur phosphite compounds classified under 2930.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Molecular weight distribution data essential due to oligomeric nature
• Confirm <1% phenol content to avoid phenol classification under 2907
• RoHS compliance documentation for electronics industry applications
Related Products under HTS 2920.29.00.00
Trimethyl Phosphite
Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified under HTS 2920.29.00.00 as a phosphite ester. It is used as a reagent in organic synthesis and as an intermediate for pesticides and flame retardants.
Triethyl Phosphite
Triethyl phosphite (P(OCH2CH3)3) is an organophosphorus compound used in the synthesis of insecticides and as a ligand in metal catalysis. It qualifies under HTS 2920.29.00.00 as 'other' phosphite esters excluding halide esters.
Triphenyl Phosphite
Triphenyl phosphite is a white crystalline solid used as a stabilizer in PVC plastics and as an antioxidant. Classified under HTS 2920.29.00.00 as a phosphite ester and its derivatives.
Tris(2-ethylhexyl) Phosphite
Tris(2-ethylhexyl) phosphite is a viscous liquid phosphite ester used as a secondary plasticizer and heat stabilizer. Falls under HTS 2920.29.00.00 as an 'other' phosphite ester.
Diphenyl Decyl Phosphite
Diphenyl decyl phosphite serves as an antioxidant in lubricants and greases. This mixed phosphite ester is classified under HTS 2920.29.00.00.
Isodecyl Diphenyl Phosphite
Isodecyl diphenyl phosphite functions as a hydrolysis stabilizer in polyurethane formulations. Classified as a phosphite ester under HTS 2920.29.00.00.