Among the dead, 26 people have been identified, Cao Lubao, mayor of Yancheng city, said at a press conference Saturday morning.
Twenty-eight people are still unaccounted for. One person was rescued on Saturday morning after an around-the-clock search, Cao said.
The blast has left 94 people with severe injuries, including 21 in critical conditions.
The explosion happened at about 2:48 p.m. Thursday following a fire that broke out in a plant, owned by Jiangsu Tianjiayi Chemical Co. Ltd., in a chemical industrial park in Xiangshui County in the city of Yancheng.
Thousands of firefighters and medical workers and hundreds of ambulances and fire trucks have joined an all-out rescue after the explosion.