Red Radish is a color obtained from the roots of red radish. Its principal component is anthocyanin. It exhibits a reddish-orange to red shade at acidic pH.
Characteristic
Dark red powder, soluble in water, aqueous ethanol, insoluble in inorganic solvents
Relatively stable to heat and light at mild acidic pH compared to other anthocyanins.
PH <7, aqueous solution is red and stable, when PH >7,turn to blue and unstable.