Hydroquinone monoethyl ether (4-ethoxyphenol) has a warm, sweet-phenolic odor with balsamic and slightly smoky facets. It carries a medicinal, guaiacol-like undertone with hints of dry wood and vanilla-tinged sweetness. Used at low levels it lends depth to phenolic and balsamic accords.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 713.
White or colorless crystal leaves.
Slightly soluble in cold water, soluble in hot water, alcohol and oils. Fairly soluble in propylene glycol.
Sweet-herbaceous odor, reminiscent of Anise and Fennel, but not as sweet as Hydroquinone methylethylether.
Slightly bitter-metallic taste, through which the sweetness is barely perceptible. Overall not a pleasant taste.
This material is rarely used in perfumes as an odorant, but it is included in this work partly for the reason of completing the series of Hydroquinone ethers, partly because this material is used in a number of perfume materials as an antioxidant or stabilizer to retard the deteriorating effect from contact with air.
Produced by regulated (Mono)-ethylation of Hydroquinone with Diethylsulfate in weak aqueous alkaline solution.