On the evening of April 18, local time, a chlorine gas leak occurred at the Dow Chemical Plant in Louisiana, southern United States. Local police have issued an "emergency shelter" notice to residents in the area near the factory and closed two-way lanes of Louisiana Highway 1 near the factory. Currently, there are no reports of chlorine leaks or hazards.

Dow Louisiana Operations subsequently issued an emergency statement saying that Dow Emergency Services was actively responding to the incident at Olin, which is Dow's third-party tenant in the Plaquemines area. Dow is working closely with the Ibeville Parish Sheriff's Office and will take appropriate precautions to prevent the continued release of chlorine gas.
At 9:45 p.m., Olin also issued a statement saying that a chlorine gas leak occurred at Olin’s plant in Plaquemin, and the emergency response at the scene had been activated. The employees of the plant had also taken safety measures, and the company was working hard to stop the gas leak.
A fire broke out at the Dow plant in Plaquemine, Louisiana, and caused a chlorine leak, local officials said. The fire was extinguished at 9:30 p.m. .
In addition, at 10:23 a.m. on April 19, local police released a message that Plaquemine, Louisiana Regional Police Emergency Services were responding to a chlorine leak at the Dow Chemical Plant in Ibbyville Parish. An "emergency shelter" notice has been issued to residents in the area near the factory, and two-way lanes of Louisiana Highway 1 near the factory have been closed.
So far, there have been no reports of harm caused by chlorine leaks. It is reported that in 2015, Olin acquired Dow's chlor-alkali and vinyl, global chlorinated organics and global epoxy businesses in North America. After the acquisition, Olin became the world's largest chlorine producer.