Also called 1,3,5-Trihydroxybenzene, Phloroglucinol Anhydrous is a naturally occurring phenol presenting as a white or beige crystalline solid. It is soluble in organic solvents but only sparingly soluble in aqueous buffers. It may be shipped at room temperature but should be stored at 4 degrees Celsius in a dark environment, as this compound is both light sensitive and hygroscopic.