Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sodium aluminium hydride (NaAlH4) or sodium alanate is a chemical compound used as a reducing agent. It is similar to lithium aluminium hydride. It is used for hydrogen storage in hydrogen tanks, the sodium tetrahydroaluminate can absorb up to 7.4 wt of hydrogen, with hydrogen released when heated at 200 °C (392 °F). absorption can be slow and take up to 15 minutes to fill a tank.