O-Phenyl O-(2-naphthyl) phosphorothioate from Canada
Polycyclic aromatic thiophosphoric ester for UV stabilizer applications in plastics. HTS 2920.19.40.00 covers this naphthyl-phenyl 'other' phosphorodithioate derivative. Naphthalene substitution qualifies as aromatic per tariff definition.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• PAH content testing mandatory for naphthyl compounds; include UV absorption spectra; declare as non-coloring per chapter exclusion (g)