Tosoh Announces Construction of a Carbon Dioxide Recovery and Feedstock Conversion Facility

Tokyo, Japan—Tosoh Corporation is building a facility to recover by-product carbon dioxide (CO2) from the operations at its Nanyo Complex, in Shunan City, Yamaguchi Prefecture. The recovered CO2 will be converted into feedstock by the facility and used at the complex as a raw material for the isocyanate products that are among Tosoh’s core products, including in particular for MDI (methylene diphenyl diisocyanate), a raw material for polyurethane. The CO2 and feedstock conversion facility is scheduled to start operation in fall 2024.

At present, Tosoh manufactures naphtha-derived carbon monoxide (CO) as a raw material for its isocyanate products. The new facility will recover approximately 40,000 tons of CO2 a year from the combustion gas released during manufacture at the Nanyo Complex through a process that utilizes proprietary technology. It will then convert the recovered CO2 to produce CO. The switch from naphtha to CO2 will contribute to the company’s low-carbon manufacture of its isocyanate products.

Since summer 2022, Tosoh has been evaluating a proprietary and highly durable amine agent to recover CO2 at a test facility. Tosoh intends to apply that agent at its commercial-scale facilities to reduce their CO2 emissions by capturing and converting the by-product CO2 for utilization in their operations. The company also plans to sell its CO2 recovery amine agent.

Tosoh is committed to contributing to the realization of a carbon-neutral society. The company is taking on this challenge by combining its many years of technological advancements and experience to generate the innovations required for carbon neutrality, in its operations and in society overall.

CO-plant.jpgNanyo Complex isocyanate raw material CO production plant

Outline of new CO2 recovery and feedstock conversion facility


Isocyanate raw material CO production plant at Nanyo Complex


CO2 recovery and feedstock conversion facility

CO2 recovery

Approximately 40,000 tons a year

Start of construction and of operations

March 2023 and scheduled for fall 2024


Who We Are

Tosoh Corporation is the parent of the Tosoh Group, which comprises over 100 companies worldwide and a multiethnic workforce of over 14,000 people. It generated net sales of ¥1,064.4 billion (US$7.9 billion at the average rate of ¥135.5 to the US dollar) in fiscal 2023, ended March 31, 2023.

What We Do

Tosoh is one of the largest chlor-alkali manufacturers in Asia. The company supplies the plastic resins and an array of the basic chemicals that support modern life. Tosoh’s petrochemical operations supply ethylene, polyethylene, and functional polymers, while its advanced materials business serves the global semiconductor, display, and solar industries. Tosoh has also pioneered sophisticated bioscience systems that are used for the monitoring of life-threatening diseases. In addition, Tosoh demonstrates its commitment to a sustainable future in part by manufacturing a variety of eco-products.

Stock Exchange Ticker Symbol: 4042


This document may contain forward-looking statements, including, without limitation, statements concerning product development, objectives, goals, and commercial introductions, which involve certain risks and uncertainties. Forward-looking statements are identified through the use of the word anticipates and other words of similar meaning. Actual results may differ significantly from the results expressed in forward-looking statements.

For more information, please contact


Lisa Lee
International Public Relations
Tosoh Corporation 

[email protected]
Tel: +81 3 5427 5118
Fax: +81 3 5427 5198