Phthalic anhydride
Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. > Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: > Phthalic anhydride > Phthalic anhydride
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2917.35.00
Food-Grade Phthalic Anhydride
Ultra-high purity phthalic anhydride (>99.9%) meeting food contact specifications, used in saccharin production. It is a separate chemically defined organic compound, qualifying under Chapter 29 note 1(a), and falls under tariff item 2917.35.00 as phthalic anhydride.
Molten Phthalic Anhydride
Phthalic anhydride supplied in heated molten liquid form at 130-140°C to prevent solidification during bulk transport. It remains the pure chemical compound under Chapter 29 note 1(a), and is classifiable under tariff item 2917.35.00 as phthalic anhydride.
Phthalic Anhydride 99.5% Technical Grade
Technical grade phthalic anhydride with 99.5% minimum assay, containing trace maleic anhydride impurities allowable under Chapter 29 note 1(a). Used in unsaturated polyester resin manufacturing and classifiable under tariff item 2917.35.00 as phthalic anhydride.
Phthalic Anhydride Briquettes
Phthalic anhydride compressed into briquettes without binders for metallurgical and resin applications. The forming method acts as an anti-dusting agent under Chapter 29 note 1(g), maintaining classification under tariff item 2917.35.00 as phthalic anhydride.
Phthalic Anhydride Export Specification PA-01
Standard export grade phthalic anhydride meeting ASTM D4286 PA-01 specifications for alkyd and polyester production. The branded specification does not affect chemical classification under Chapter 29 note 1(a), and it falls under tariff item 2917.35.00.
Phthalic Anhydride Flakes
Phthalic anhydride in solid flake form, a white crystalline solid derived from o-xylene oxidation, used primarily in the production of plasticizers and resins. It is the pure aromatic compound under Chapter 29 note 1(a), classifiable under tariff item 2917.35.00.
Phthalic Anhydride Pellets
Phthalic anhydride formed into uniform pellets for easier handling and dosing in resin production. The pelleting is solely for transport and preservation per Chapter 29 note 1(f), maintaining classification under tariff item 2917.35.00.
Phthalic Anhydride with 0.02% Inhibitor
Phthalic anhydride stabilized with 0.02% hydroquinone inhibitor to prevent premature polymerization during storage and transport, allowable under Chapter 29 note 1(f). It is classifiable under tariff item 2917.35.00 as phthalic anhydride.