Bisphenol A bis(4-hydroxyphenyl)propane derivative acid
A structural analog of 4,4-bis(4-hydroxyphenyl)pentanoic acid used in polymer synthesis, classified under the specific naming in HTS 2918.29.3900. It maintains the phenolic carboxylic acid structure without additional oxygen functions. Applied in specialty resin production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phenol function dominates and acid group is minor
Simple dihydric phenols without prominent carboxylic classification go to Chapter 29 phenols.
If polycyclic aromatic carboxylic acid structure emphasized
Alternative view as aromatic polycarboxylics, but phenol function prevails per numerical order.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Label with CAS number (if assigned) and purity percentage; customs often rejects vague chemical descriptions
• Obtain end-use statement for non-pharma applications to prevent dual-use scrutiny
• Avoid bulk packaging over 25kg without stabilizer, as chapter note (f) requires for pure compounds
Related Products under HTS 2918.29.39.00
4,4-Bis(4-hydroxyphenyl) pentanoic acid
This is a specific carboxylic acid with phenol function, explicitly named in HTS 2918.29.3900. It features two 4-hydroxyphenyl groups attached to the 4-position of pentanoic acid, classifying it under carboxylic acids with phenol function but without other oxygen functions. Used primarily as a pharmaceutical intermediate.
3,5,6-Trichlorosalicylic acid
A halogenated derivative of salicylic acid, specifically listed under HTS 2918.29.3900 as a carboxylic acid with phenol function. The trichloro substitution on the aromatic ring qualifies it under halogenated phenolic carboxylic acids without other oxygen functions. Commonly used in dye synthesis and pharmaceutical intermediates.
Technical grade 3,5,6-Trichlorosalicylic acid 98%
Industrial-grade 3,5,6-trichlorosalicylic acid with 98% purity and minor impurities, still classified under HTS 2918.29.3900 per chapter note (a) allowing impurities. Used in azo dye coupler production and herbicide intermediates.
4,4-Bis(4-hydroxyphenyl)pentanoic acid stabilized crystals
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.