Propylene can be used to produce chemical products such as polypropylene, acrylonitrile, and propylene oxide; this dataset includes major raw materials, auxiliary materials, energy inputs, atmospheric emissions, waterborne emissions, and waste from the production process. Infrastructure such as production equipment and facility construction is not included within the system boundary of the dataset; the life cycle inventory data are sourced from literature. Propylene production activities from crude oil refining include processes such as raw material pretreatment, cracking reaction, separation, purification, and packaging.