Hexahydrophthalic anhydride from Mexico
Hexahydrophthalic anhydride is the cyclic anhydride of cyclohexane-1,2-dicarboxylic acid, a derivative specifically covered by HTS 2917.20.00.00. This cyclanic compound is widely used in epoxy resin curing agents and alkyd resin production. It qualifies as a chemically defined derivative of cyclanic polycarboxylic acids.
Duty Rate — Mexico → United States
14.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide structural formula and production process documentation to distinguish from aromatic phthalic anhydride (2917.36)
• Include safety data sheets noting irritant properties and ensure UN-approved packaging for international shipment
• Confirm not mixed with stabilizers exceeding Chapter 29 note (g) limits to maintain principal classification