R600a Isobutane Refrigerant

European natural gas liquids producers including IGas (UK), SHV Energy (Netherlands), and Primagaz (France) produce isobutane as a byproduct of natural gas processing. European household refrigerator manufacturers (Liebherr, BSH/Bosch-Siemens, Electrolux) source R600a from European NGL producers and distributors. Since >90% of new European household refrigerators use R600a, European NGL producers are de facto major suppliers to the European appliance industry without typically marketing R600a as a specialty product.

ExxonMobil is a major producer of isobutane (R600a feedstock) as a byproduct of petroleum refining and natural gas liquid (NGL) fractionation at refineries globally. Isobutane is separated from butane and other C4 streams in NGL plants and petroleum refineries; ExxonMobil's Baytown TX and Baton Rouge LA refineries produce significant isobutane volumes. R600a refrigerant-grade isobutane requires purification to remove contaminants (particularly propane and n-butane) to ≥99.5% purity specifications. ExxonMobil does not primarily market R600a as a refrigerant product but supplies isobutane as a feedstock to chemical companies and distributors.

Mexican chemical conglomerate (BMV: ORBIA, HQ Mexico City); markets R600a as part of its Klea® natural refrigerants line. Orbia/Mexichem was historically the world's dominant HFC refrigerant supplier but has diversified into natural refrigerants including R600a (isobutane) and R290 (propane) as part of low-GWP product portfolio. Processes and distributes refrigerant-grade isobutane from NGL feedstock. Same Orbia that operates Las Cuevas mine (world's largest fluorspar mine in Mexico) — also a major refrigerant distributor for both HFCs and natural hydrocarbons.

U.S. refrigerant distributor and reclaimer (HQ Philadelphia PA); one of the largest independent refrigerant distributors in North America. Markets R600a isobutane refrigerant for household refrigerators following EPA SNAP program expansion (2021, then further in 2023). Sources isobutane from petroleum and NGL producers, purifies to refrigerant grade, and packages for sale to appliance OEMs and service technicians.