Guaiacol Glycerol Ether from China
Guaiacol glycerol ether is a specialized derivative where guaiacol is ether-linked to glycerol, used in pharmaceutical formulations for expectorant properties. Classified under HTS 2909.50.20.00 as it maintains the core guaiacol ether-phenol structure. Imported for synthesis of advanced respiratory therapeutics.
Duty Rate — China → United States
40.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Provide reaction pathway documentation showing derivation from guaiacol base structure to support classification
• Test for glycerol content; excess may trigger reclassification as glycerol ether-alcohol under different provisions
• Include stability data confirming no decomposition products that alter chemical definition