Molten white particles or strip, now often made small flake. Easy to absorb moisture and carbon dioxide from air 1g soluble in cold water, 0.3 ml 0.9 ml water, 7.2 ml anhydrous alcohol 4.2 ml methanol. Soluble in glycerin. Soluble in water, ethanol or dissolve with acid mixture liquid generated when the intense heat. Solution is strongly alkaline relative density 2.13. Melting point 318 ℃. Boiling point 13.9 ℃. Half of the lethal dose (mice, celiac) 40mg/kg. Corrosive.