Pyrogallic Acid, also known as 1,2,3-Trihydroxybenzene, 1,2,3-Benzenetriol , Pyrogallic acid, Pyrogallol. At room temperature, it is a white shiny crystalline powder that tastes bitter and slowly turns dark gray when exposed to the air. Slow heating can sublimate. soluble in water. The aqueous solution gradually turns dark when exposed to air, and the caustic soda aqueous solution discolors quickly. Soluble in ethanol and ether, slightly soluble in benzene, chloroform, carbon disulfide. 

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