Vitamin B12

Vitamin B12: 

Dark red crystalline or amorphous crystalline powder, odorless and odorless. Melting point 210~220 ℃ (carbonization turns black). 1g of this product is soluble in 80mL of water, ethanol, and insoluble in acetone, ethyl Chemicalbook ether, or chloroform. Anhydrous substances are prone to moisture absorption, and crystalline cobalt cyanide amine has good air and thermal stability in neutral and slightly acidic solutions. It is not very stable in alkaline, strong acids, and reducing agents, and is not resistant to light and ultraviolet radiation.