[4] The former was established in 1933 and was mainly engaged in the manufacture of fertilizers while the latter was founded in 1941 and produced dyes and organic intermediates.

its first polypropylene compounding plant in India at 'Japanese Investment park' Neemrana phase III.

In February 2021, the company stopped operations in their Ichihara petrochemical complex in east Japan's Chiba prefecture to carry out safety inspections after an earthquake hit northeast Japan's Fukushima prefecture.

One of the technologies owned by Mitsui Chemicals is the Hypol II process, which uses a miniature loop reactor to prepolymerize catalyst.

MR Lenses are used by large direct-to-consumer manufactures, including Zenni Optical.