Ethyl Mercaptan (Propane Odorant)

French specialty chemicals company; world's leading ethyl mercaptan producer. Beaumont, TX is the sole US production site for propane odorant ethyl mercaptan. In 2023, Arkema produced 11,000+ MT of mercaptans total, supplying gas odorants to 200+ distribution companies globally across Europe, North America, and Asia-Pacific. Arkema also produces mercaptan blends (SPOTLEAK, VIGILEAK) for natural gas odorization. Separate from mercaptans, Arkema operates specialty polymers, adhesives, and coating resin businesses. Also notable for the September 2017 Arkema Crosby TX peroxide plant fire — a different Arkema facility near Houston that caught fire during Hurricane Harvey when refrigeration failed, causing explosion and evacuation.

Major US petrochemical company (JV between Chevron and Phillips 66); produces ethyl mercaptan at Borger, TX and Tessenderlo, Belgium (Tessenderlo expanded 65% in 2017). Ethyl mercaptan is part of a broader organosulfur chemicals portfolio including methyl mercaptan, DMDS (dimethyl disulfide), and specialty sulfur chemicals. Applications: gas odorization, polymer modifiers, agricultural chemicals, pharmaceuticals, water purification, and lubricant additives. Tessenderlo capacity expansion noted by Hydrocarbon Processing (2017). Also the world's leading polyethylene producer (Cedar Bayou, TX cracker complex).

German specialty chemicals company; major producer of methyl mercaptan (used in methionine synthesis for animal feed) and other organosulfur chemicals. Also produces specialty sulfur chemicals including mercaptan blends used in gas odorization. Evonik's organosulfur chemicals are primarily focused on methionine production (world's largest DL-methionine producer under 'EVONIK MetAMINO' brand) — methionine is the most important amino acid supplement for poultry and aquaculture. Same mercaptan chemistry used in safety odorants also underpins the global animal feed amino acid supply chain.

World's largest industrial gas company; provides gas odorant distribution and blending services globally including ethyl mercaptan. Air Liquide distributes and markets mercaptan gas odorants to LPG and natural gas utilities. Also a leading producer of industrial gases (oxygen, nitrogen, hydrogen, noble gases) for healthcare, industry, and energy. Air Liquide is listed among the top ethyl mercaptan market participants; primarily as a specialty gas blender/distributor rather than a primary mercaptan chemical producer.