Japan's Mitsubishi Chemical said on Friday that it aims to restart the No.2 naphtha cracker at its Kashima plant, with capacity to produce 453,000 tons per year of ethylene, around May 20, marking the reopening of the plant after it was shut by a massive quake on March 11.

The company, a wholly owned unit of Mitsubishi Chemical Holdings, also said it was set to restart the other 375,000 tpy No.1 cracker at the plant on June 27, after planned maintenance is completed.