The 11-alarm fire broke out just before 9 p.m. at the Majestic Industries warehouse on Passaic St.
The company manufactures gaming and hospitality furniture for casinos and bingo halls and is connected to a chlorine manufacturer.
Firefighters say the main building where the fire broke out has collapsed.
Mayor Hector Lora is asking all Passaic residents to keep their windows closed and to stay inside because it is a dangerous chemical fire.
He says streets are blocked off from Passaic St. from 1st St. past Columbia Ave all the way up to Main Ave. As of right now, officials say surrounding buildings do not need to evacuate.
Firefighters on the scene are dealing with severe water issues due to a lack of water pressure from the hydrants.
One firefighter was treated at an area hospital for minor injuries.
The cause of the fire remains under investigation.
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