It is miscible in petroleum solvents but immiscible in water. It is partially miscible with ethanol and ether, but nearly immiscible with water. Any solute partitions between two immiscible solvents. Such catalysts accelerate reactions between reagents dissolved in immiscible solvents. The phase interface method involves trapping homogeneous nanoparticles at the interface of two immiscible phases. Emulsions and colloids are examples of immiscible phase pair combinations that do not physically separate. Similar phases and characteristics can be observed in immiscible diblock copolymers. An incomplete separation is witnessed during the separation of two immiscible liquids. Microbial biosurfactants are obtain by including immiscible liquids in the growth medium. Decantation can be used to separate immiscible liquids that have different densities. MDEA is also resistant to thermal and chemical degradation and is largely immiscible with hydrocarbons. Upon mixing, they separated into two immiscible phases. As many as eight immiscible liquid phases have been observed. The first is ITIES, "interfaces between two immiscible electrolyte solutions". The majority of microemulsions use oil and water as immiscible liquid pairs.