Sunset Yellow FCF CAS 2783-94-0
Orange-red powder or granules, odorless. It has strong hygroscopicity and is easy to bind to water. The aqueous solution is yellowish orange. It is also easy to dissolve in dry glycerin, propylene glycol, and a few ethanol, insoluble in oil. Lightfast. Heat resistant. Stable in citric acid and tartaric acid. Its aqueous solution does not change when it encounters concentrated hydrochloric acid, but turns red-brown when it encounters concentrated oxygen and sodium oxide. With acid dye characteristics, it can dye animal fibers directly.
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