Nickel acetylacetonate is a light green orthorhombic crystal crystal, also known as bis(acetylacetonyl) dihydrate coordinated nickel, 2,4-pentanedione nickel dihydrate. Blue-green orthorhombic crystals. Slightly soluble in Chemicalbook water and methanol, soluble in ethanol. In warm toluene boiling and dehydration, nickel acetylacetonate anhydrous is generated. When heated to 100°C under vacuum, it is also dehydrated into a light green anhydrous substance.