The non-fluorinated chemicals sector includes facilities that manufacture adipic acid, ammonia, hydrogen, nitric acid, petrochemicals, phosphoric acid, silicon carbide, titanium dioxide, and other chemicals (i.e., facilities with various NAICS codes related to chemical production). Reported emissions from the non-fluorinated chemicals sector have increased from 163.1 million metric tons (MMT) CO₂e to 177.0 MMT CO₂e (8.5 percent) from 2011 to 2019. After a slight decrease (3 percent) from 2011 to 2012, emissions steadily increased by 1 to 5 percent per year through 2018, before decreasing by 6.2 MMT CO₂e (3 percent) for 2019. While petrochemical production, hydrogen production, and ammonia production manufacturing are the three largest contributors to emissions from the non-fluorinated chemicals sector, the 2018 to 2019 emissions decrease was due primarily to adipic acid production. Emissions from the other subsectors were either relatively steady or declined, but the magnitude of these emissions is small relative to the larger subsectors.

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