Phthalic Acid Crystals
Phthalic acid is a separate chemically defined aromatic polycarboxylic acid, used as an intermediate for phthalic anhydride and resins. It is classified under this 'other' tariff item as it is not specifically named elsewhere in the subheading.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
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Import Tips & Compliance
• Confirm the product is phthalic acid (CAS 88-99-3) with no impurities that alter its identity
• Keep records of the manufacturing process to demonstrate it is a separate chemically defined compound
• Check if the product is subject to Canadian food contact material regulations if used in food packaging
Related Products under Tariff item 2917.39.00
2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane Dianhydride
2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride, also known as 4,4'-(hexafluoroisopropylidene)bis(phthalic anhydride), is a separate chemically defined aromatic polycarboxylic anhydride. It is used in polyimides for optical applications and falls under this 'other' tariff item.
4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) 98% purity
4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) at 98% purity is a separate chemically defined aromatic polycarboxylic anhydride with a fluorinated bridge. It is used in high-performance polymers and falls under this 'other' tariff item.
4-Sulfo-1,8-Naphthalic Anhydride
4-Sulfo-1,8-naphthalic anhydride is a sulfonated aromatic polycarboxylic anhydride, a separate chemically defined compound used as an intermediate in fluorescent brighteners and dye synthesis. It falls under this tariff item as an 'other' aromatic polycarboxylic anhydride derivative, not more specifically covered elsewhere in the subheading.
6FDA Monomer -- 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)
6FDA monomer, or 4,4'-(hexafluoroisopropylidene)bis(phthalic anhydride), is a chemically defined aromatic polycarboxylic anhydride used in polyimide synthesis. It is classified under this 'other' tariff item as it is not specifically named in the subheading.
Fluorinated Dianhydride 4,4'-HFIPA
Fluorinated dianhydride 4,4'-HFIPA, also known as 4,4'-(hexafluoroisopropylidene)bis(phthalic anhydride), is a separate chemically defined compound used in gas separation membranes. It falls under this 'other' tariff item as an aromatic polycarboxylic anhydride.
High Purity Naphthalic Anhydride for Dye Synthesis
High-purity naphthalic anhydride (>99%) is a separate chemically defined aromatic polycarboxylic anhydride used in perylene dye synthesis. It is classified under this 'other' tariff item as it is not specifically named elsewhere in the subheading.