Vitamin K3 ( MNB) 50/ 96.0% Name: Menadione Nicotinamide Bisulphate Molecular formula: C17H16N2O6S Molecular weight: 376.23 Appearance: White to creamish crystalline powder Solubility: Insoluble in water Specifications: MNB 96% Content of -menadione: 43.7% min Content of Nicotinamide: 31.2 % in MNB 50% Content of -menadione: 23.3% min Content of Nicotinamide: 16.4% min Packing: 25Kgf netcarton, inner plastic bag Shelf life: 12 months Physical characteristics: White crystal power, little water ---soluble( 1.3g/ 100ml) , easily dissolved in ethane and chloroform.