The pure Methomyl is white cystal powder.Melting point:78-79¬-C vapors pressure: 6.67mPa(25¬-C),Density(25/40¬-C)1.295g/ml,soluble in acetone, methyl alcohol, chloroform. It's not stable with acid and alkali. Packing:100 g water soluble bag+aluminium bag.