Ponceau 4R altiminium lake
Product Description:Traits red fine powder, odorless. Insoluble in water and organic solvents.The Ponceau 4R altiminium lake light resistance, heat resistance, slightly better than the Carmine.Preparation method carmine aqueous solution of aluminum chloride was added, the formation of alumina hydrate in an aqueous solution of aluminum sulfate and sodium carbonate role, so that adsorption, forming rouge red lake.
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