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Acid Red 27
Reddish brown to dark reddish brown powder or granules. Odorless. It has strong light resistance and heat resistance (105°C), and poor oxidation and reduction resistance. It is not suitable for fermented foods and foods containing reducing substances. Stable to citric acid and tartaric acid. It turns dark red in contact with alkali. It is easy to fade in contact with copper and iron. The dyeing power is weak. It is easily soluble in water (17.2g/100ml, 21℃) and glycerin. The aqueous solution is purple. Slightly soluble in ethanol (0.5g/100mL50% ethanol).
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