Manufacture of Olefins 1.
Feedstocks are ethane, propane, naphtha, gas oil.
Recognized to have carcinogenic potential. 1,3-butadiene ethylene oxide formaldehyde Acetic Acid Synthesis 1. Oxidation of ethylene, acetaldehyde 2. Oxidation of n -butane 3. Fermentation of sugars, before 1950.