Sulfur dioxide (sulphitation agent)

One of the world's largest oil and gas companies; major US and global sulfur producer as a Claus Process refinery byproduct. Key US refining locations: Baytown, Texas (largest US refinery complex); Baton Rouge, Louisiana; Beaumont, Texas. Also major international refiner (Antwerp, Rotterdam). USGS listed as one of leading US recovered sulfur producers. Also holds 25% of Tengizchevroil (TCO) in Kazakhstan, making it indirectly a significant producer of high-sulfur crude and associated sulfur. Acquired Pioneer Natural Resources 2024 (~$60B), largest US oil deal since Exxon-Mobil merger.

British-Dutch energy major (LON/NYSE: SHEL); one of 5 named dominant US IPA producers per ICIS March 2020. Shell's US IPA production is likely at its Geismar, Louisiana chemical plant (located on the Mississippi River ~20 miles south of Baton Rouge, operating since 1967). Shell produces IPA via propylene hydration at European facilities including Pernis, Netherlands (Rotterdam refinery complex). Shell rebranded its chemicals business as 'Shell Chemicals and Products' and has divested some chemical assets. Globally, Shell is a major IPA supplier to Europe and Asia-Pacific.