Guaiacol
Guaiacol is an aromatic ether (2-methoxyphenol) used primarily as an expectorant in cough syrups and as a flavoring agent. It falls under HTS 2909.30.40.00 as an aromatic ether described in additional U.S. note 3 to section VI, which includes specific chemically defined compounds in this category.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as impure or technical grade
Impurities exceeding chapter note (a) thresholds shift to Chapter 29 mixed products.
If when put up as mixture for retail perfume sale
Retail fragrance mixtures fall under Chapter 33 per chapter exclusion note (g).
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
• Verify purity certificate (typically 98%+) as impurities may affect classification under chapter 29 notes
• Include chemical analysis report to confirm aromatic ether structure per HTS hierarchy
• Avoid misclassification as phenol derivative; ensure CAS 90-05-1 documentation
Related Products under HTS 2909.30.40.00
Anisole
Anisole (methoxybenzene) is a colorless liquid aromatic ether used as a solvent in perfumery, pharmaceuticals, and chemical synthesis. Classified under HTS 2909.30.40.00 as an 'other' aromatic ether per additional U.S. note 3 to section VI.
Veratrole (1,2-Dimethoxybenzene)
Veratrole is a dimethyl aromatic ether used in organic synthesis and as an intermediate for pharmaceuticals. Falls under HTS 2909.30.40.00 for 'other' aromatic ethers per U.S. note 3.
1,4-Dimethoxybenzene (Hydroquinone Dimethyl Ether)
1,4-Dimethoxybenzene serves as a synthetic intermediate and polymer additive, characterized as an aromatic diether. Classified in HTS 2909.30.40.00 under additional U.S. note 3 for specified aromatic ethers.
Eugenol Methyl Ether (Methyl Eugenol)
Methyl eugenol is an aromatic ether found in essential oils, used in perfumery and as an insect attractant. It meets HTS 2909.30.40.00 criteria as a chemically defined aromatic ether from U.S. note 3.
Diphenyl Ether
Diphenyl ether (phenyl ether) is used as a heat transfer fluid and chemical intermediate, qualifying as a basic aromatic ether. Falls under HTS 2909.30.40.00 per additional U.S. note 3 specifications.
4-Methoxyphenol (Methoxyhydroquinone)
4-Methoxyphenol is an aromatic ether-phenol used as a polymerization inhibitor in acrylic resins and UV stabilizer. It qualifies under HTS 2909.30.40.00 as an aromatic ether derivative listed in additional U.S. note 3.