Quinine sulfate is intensely bitter with a faint dry, medicinal, slightly earthy character. It is more a taste-active alkaloid than a true aromachemical; on a blotter it reads as almost odorless with a subtle dusty bitterness. Occasionally referenced in tonic-water or 'bitter' accords for its conceptual bitterness rather than strong olfactory contribution.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1225.
White, dull, needle-like crystals.
0.12% soluble in water, 0.9% soluble in alcohol.
Odorless.
Intensely bitter taste.
Quinine sulfate is used as a bitter matter in carbonated beverages, candy and certain other foods.