RE0445 Ammonium Perrhenate
Ammonium perrhenate(APR) was discovered soon after rhenium. APR could be produced from almost all normal sources of Re and it is the most common form in which Re is traded. NH4ReO3 is white and crystal-like salt, with good water solubility. Ammounium Perrhenate is often used to produce high purity Rhenium powder.