After being alerted about the leak, the fire brigade personnel rushed to the spot and launched a rescue operation and the unit was vacated, he said.
The deceased were identified as Prabhakar Khadse (59), Dattatraya Ghule (25), and Raghunath Gorai (25), an official said.
The exact cause of the deaths will be ascertained after the post-mortem, he said.
"The chemical that had got leaked is being identified," the official said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)