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2918.29.39.00/4,4-Bis(4-hydroxyphenyl)pentanoic acid stabilized crystals/Mexico

4,4-Bis(4-hydroxyphenyl)pentanoic acid stabilized crystals from Mexico

Crystalline form of 4,4-bis(4-hydroxyphenyl)pentanoic acid with added stabilizer for transport, classified under HTS 2918.29.3900 per chapter note (f). The stabilizer prevents degradation without altering use suitability.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Document stabilizer type/concentration; must prove 'necessary for preservation' per notes

• Use DOT-compliant inner packaging for phenolic acids prone to discoloration