The blast caused a fire and thick smoke to bellow from the plant in Lishui city shortly before midnight, state radio said on its official Weibo microblog.
Firefighters were on the scene and there were no immediate reports of casualties.
Chemical plant blasts are relatively common in China. At least five people died in an explosion at one in Shandong province last week.
On Aug. 12, explosions at a warehouse storing dangerous chemicals devastated an industrial park in the port city of Tianjin, killing more than 160 people.
Tianjin mayor Huang Xingguo said the city would step up controls on hazardous chemicals companies, according to media reports on Monday .... http://www.reuters.com
