Petrochemicals are chemicals that are derived from petroleum or crude oil. They are used to make many everyday products like plastics, fertilizers, and synthetic fibers. Full definition
By specially sourcing these diapers this way, Earth's Best has actually worked to reduce the amount of petro chemicals in the air and ground. (earlymomentsmatter.org)
The sculpture includes elements such as valves and flanges from petro chemical plants, tanks used for food processing, and glass vessels from the pharmaceutical industry. (jamescohan.com)
I know soy isolates use petro chemicals to get the isolate form, not sure on the whey if it is the same process. (sock-doc.com)