This piperazine, also known as 2-(1-Piperazinyl)pyrimidine, presents as a white to very pale yellow crystalline solid. Store in a cool and dark place, under inert gas and protected from moisture, as this substance is hygroscopic. 1-(2-Pyrimidyl)piperazine is incompatible with oxidizing agents. This chemical is known to cause skin irritation as well as serious eye irritation.