Phthalic Anhydride Flakes from Japan
Phthalic anhydride in flake form is a key aromatic polycarboxylic anhydride used primarily in the production of plasticizers for PVC and polyester resins. It falls under HTS 2917.39.04.00 as it is specifically listed as 'Phthalic acid' (understood to include its anhydride form per tariff convention). This chemically defined organic compound meets Chapter 29 note (a) for separate compounds.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis (COA) confirming purity >99% as phthalic anhydride to avoid reclassification as mixtures
• Ensure DOT/UN proper shipping name 'Phthalic anhydride' documentation for hazardous material transport (UN 2214)
• Verify no added stabilizers beyond Chapter 29 note (f) limits to prevent exclusion from pure compound classification