Ethylene Oxide Releases Trend
This section focuses on one of the TRI OSHA carcinogens, ethylene oxide. The figure below presents the 10-year trend in releases of ethylene oxide as reported to TRI by about 115 facilities per year.
Ethylene oxide is a human carcinogen, meaning that it is known to cause cancer in humans. In 2021, EPA extended TRI reporting requirements to certain contract sterilization facilities that use ethylene oxide. This action became effective for the 2022 reporting year with the first reports for these particular facilities due on July 1, 2023.
- From 2011 to 2020, releases of ethylene oxide decreased by 166,000 pounds (-54%), driven by reductions in air releases.
- From 2019 to 2020, releases of ethylene oxide decreased across most sectors. Most individual facilities also reported lower releases of ethylene oxide from 2019 to 2020.
- Two chemical manufacturers in Texas reported that they had large one-time (non-production-related) releases of ethylene oxide to air in 2018 and 2019, driving the increase from 2017 to 2018 and the decrease from 2018 through 2020.
This page was published in March 2022 and uses the 2020 TRI National Analysis dataset made public in TRI Explorer in October 2021.