It is a white salt that is soluble in water.

It can be prepared by treatment of rhenium heptoxide with base or by ion exchange from the potassium salt.

[2] Sodium perrhenate can be prepared from rhenium metal with hydrogen peroxide in the presence of base.

[3] It reacts with sodium in ethanol to give nonahydridorhenate.

[2] Sodium perrhenate has been used as a precursor of rhenium nitrides (such as Re3N, Re2N, Re3N2, ReN2, ReN3, ReN4), which can be used as catalysts for ammonia synthesis and for hydro-denitrogenation.