Improved Process for the Extraction of Lac-dye and Shellac
12,877. Fowler, G. J., and O'Meara, E. J. June 16. Dyes from natural products.-Stick-lac is treated with suitable solvents to extract shellac and wax, either together or separately. The residues after extraction are treated with alkali or alkali carbonate solution to dissolve out the lac-dye. T...
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