This aromatic polyether, also known as phloroglucinol trimethyl ether, presents as a white to slightly pale-yellow crystalline powder. It is known to be soluble in methanol, benzene and insoluble in water. Store in a cool and dark place at ambient temperatures. 1,3,5-Trimethoxybenzene is incompatible with oxidizing agents and should not be stored or handled near them. This chemical is harmful if swallowed.