DuPont Beaumont released an unknown amount of aniline during a plant start-up last week, but the incident did not cause any injuries, a plant spokesman said.
An on-site physician evaluated 26 plant workers, said Aaron Woods, regional manager of DuPont public affairs.
The plant shut down the aniline unit and conducted a shelter-in-place at the plant on Texas 347 between Beaumont and Nederland.
DuPont notified all appropriate regulatory agencies, Woods said.
That includes the Texas Commission on Environmental Quality, which requires a report of all plant upsets within 24 hours of an incident. Final reports are due 14 days from the incident.
“There are no impacts to the community, as the release was confined to the site,” Woods said.
The Agency for Toxic Substances and Disease Registry describes aniline as a clear to slightly yellow liquid with a characteristic odor.
It does not readily evaporate at room temperature, is slightly soluble in water and mixes readily with most organic solvents.
Aniline sees use in making a variety of products such as polyurethane foam, agricultural chemicals, synthetic dyes, antioxidants, stabilizers for the rubber industry, herbicides, varnishes and explosives, the registry said on its website, atsdr.cdc.gov.
It is not associated with cancer-causing substances, the registry said.