Triphenyl Phosphate (TPP)
Triphenyl phosphate serves as a flame retardant and plasticizer in rigid PVC, cellulose acetate, and synthetic resins. Classified under HTS 2919.90.50.50 as an 'other' phosphoric ester, it matches the chapter's scope for separate chemically defined organic phosphate compounds. Its aryl phosphate structure distinguishes it from alkyl phosphates listed elsewhere.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as tris(1,3-dichloro-2-propyl) phosphate
Halogenated derivatives of phosphoric esters have specific provisions earlier in heading 2919.
If when used primarily as a pigment dispersant
Synthetic organic products functioning as auxiliaries for pigments shift to Chapter 32.
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Import Tips & Compliance
• Include CAS number (115-86-6) and purity analysis on commercial invoice to confirm classification as pure phosphoric ester
• Check REACH compliance if sourced from EU; US importers need TSCA certification
• Label containers properly to prevent confusion with restricted isomers like TOCP
Related Products under HTS 2919.90.50.50
Tricresyl Phosphate (TCP)
Tricresyl phosphate is a triaryl phosphate ester used primarily as a plasticizer and flame retardant in plastics, lubricants, and vinyl applications. It falls under HTS 2919.90.50.50 as a phosphoric ester (phosphate ester) that is not specifically enumerated elsewhere in heading 2919. This classification applies to its chemical structure as an organophosphate ester without halogenated, sulfonated, nitrated, or nitrosated derivatives.
Cresyl Diphenyl Phosphate
Cresyl diphenyl phosphate is an organophosphate ester employed as a hydraulic fluid base and flame retardant in aviation lubricants. It qualifies for HTS 2919.90.50.50 as a non-specific phosphoric ester and salt under the chapter notes for chemically defined organic compounds. The mixed aryl structure places it in the 'other' category.
Isodecyl Diphenyl Phosphate (IDPP)
Isodecyl diphenyl phosphate functions as a low-volatility plasticizer and flame retardant for flexible PVC and coatings. This alkyl-aryl phosphoric ester is captured by HTS 2919.90.50.50 as an 'other' phosphoric ester per Chapter 29 note (a) for separate organic compounds. It lacks specific provisions elsewhere in the heading.
Triethyl Phosphate (TEP)
Triethyl phosphate acts as a catalyst, solvent, and flame retardant in resins and plastics manufacturing. As a low molecular weight phosphoric ester, it falls under HTS 2919.90.50.50 per chapter provisions for separate organic phosphate compounds. Widely used in pharmaceutical synthesis intermediates.
Diphenyl 2-Ethylhexyl Phosphate
This mixed alkyl-aryl phosphate ester serves as a plasticizer for nitrocellulose lacquers and flame retardant. HTS 2919.90.50.50 covers it as an unspecified phosphoric ester under Chapter 29 organic compounds scope. The ester linkage defines its principal chemical character.
Tris(2-chloroethyl) Phosphate (TCEP)
TCEP is a chlorinated phosphate ester used as flame retardant in polyurethane foam and textiles. Despite halogenation, as an 'other' derivative it falls under HTS 2919.90.50.50 per chapter notes including halogenated phosphoric esters. Provides reactive flame retardancy.