Diisopropyl ether is secondary that is used as a . It is a colorless liquid that is slightly soluble in water, but miscible with most organic solvents. It is also used as an .
Diisopropyl ether tends to form explosive upon standing in air for long periods (years). This reaction proceeds easier than for , due to the secondary carbon next to the oxygen atom, which makes storage of diisopropyl ether more dangerous. The stored solvent should therefore be tested for the presence of peroxides more often (recommended once every 3 months for diisopropyl ether vs. once every 12 months for ethyl ether). For the safety reasons, is often used as an alternative solvent.