... 32 g/cm3, melting point above 104 ℃, insoluble in water, soluble in gasoline, soluble in alcohol, ether, acetone, benzene, toluene, methylene chloride, ... of the main raw material indispensable. This product is a high-grade natural rubber and synthetic rubber delayed action ... or kraft paper bag, 25KG / bag. Storage: Store in a dry place, storage stable for one year. This product has good storage ...