Propylene cas 115-07-1 is the most important product in the petrochemical industry after ethylene.propene also is the raw material of all kinds of products.Manufacturers of polypropylene, the plastic, account for nearly two-thirds of all demand. The ens uses of polypropylene include films, fibers, containers, packaging, bottle caps and seals.Propylene cas 115-07-1 is also used in the production of important chemicals such as propylene oxide, acrylonitrile, curetene, butyraldehyde and acrylic acid.