Bleached Shellac

The basic procedure in the bleached process consists in dissolving in aqueous sodium carbonate solution at 90-100 degree celcius, stirring off the solution with sodium hydrochloride and the start filtering after cooling down the temperature of solution. The bleached shellac is reclaimed from the filtered solution with sulphuric acid. The precipitated bleached shellac is ten filtered and washed from water for removal of acid and dried.