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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphite is metal-coordinated
Coordination compounds classified by latest numerical heading per Chapter 29 note.
If for sulfonated phosphite derivatives
Sulfonated derivatives classified under phosphoric acid esters in 2919.
If imported as chemical mixture >10% phosphite
Mixtures not qualifying as chemically defined compounds fall under Chapter 38.
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
• Verify CAS number 122-52-1 on all documentation to prevent confusion with phosphate esters
• Include stabilizer certificates if product contains anti-oxidants per Chapter 29 note (f)
• Check for REACH compliance documentation for EU origin goods before US importation
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.
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.
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.