Phthalic Anhydride 99.8% Pure Technical Grade
High-purity technical grade phthalic anhydride (99.8% min) is a separate chemically defined aromatic polycarboxylic anhydride. Trace impurities such as maleic anhydride are permitted under Chapter 29 note 1(a) as long as they do not render the product suitable for a specific use.
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
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Import Tips & Compliance
• Provide a certificate of analysis showing purity and impurity profile
• Ensure the product does not contain added substances for specific uses
• Verify if the product requires a WHMIS SDS for Canadian import
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.