Freeport, Texas – October 27, 2025 — Dow (NYSE: DOW) has announced that its isocyanates manufacturing facility in Freeport, Texas, is now ISCC PLUS certified, marking a major step forward in the company’s strategy to scale bio-circular materials and advance sustainable polyurethane production across North America. The achievement reinforces Dow’s commitment to transparent, credible low-carbon supply chains and aligns with growing market demand for eco-friendly MDI solutions in the construction, automotive, and consumer industries.
With this certification, all MDI and isocyanate products produced at the Freeport site can now be offered with bio-based and circular-attributed feedstocks through the mass balance approach. These materials originate from Dow’s Ecolibrium™ portfolio, enabling customers to access lower-carbon solutions without compromising on product performance.
“Securing ISCC PLUS certification at our Freeport MDI Complex is a significant milestone for Dow. It validates the integrity of our sustainability efforts and strengthens traceability across our supply chain,” said Laurie B. Thibodeaux, Senior Unit Operational Excellence Leader. “With this certification, customers can confidently choose materials that help advance their own sustainability goals and support evolving requirements in construction materials, automotive applications, and consumer product manufacturing.”
A Broader Portfolio of Sustainable Isocyanates for North America
Dow is expanding the availability of ISCC PLUS-certified MDI products that incorporate bio-circular raw materials. Several key polyurethane feedstocks will now feature Ecolibrium™ mass balance attribution, including:
PAPI™ 580N REN Polymeric MDI — ideal for polyiso insulation boards and insulated metal panels
- PAPI™ 23 REN — used for furniture and mattress foam production
- SPECFLEX™ NES 1540 REN — designed for automotive NVH (noise, vibration, harshness) solutions
- ISONATE™ 143L REN Modified MDI — supporting high-performance coatings, adhesives, sealants, and elastomers
- These products provide customers with reduced carbon footprint options while maintaining the reliable performance expected from Dow’s polyurethane raw materials.
Strengthening Circularity and Low-Carbon Innovation
The certification of the Freeport MDI Complex positions Dow to further scale alternatives to fossil-based feedstocks as additional bio-circular materials become commercially available in North America. In other regions—such as Europe—Dow already uses automotive industry waste streams to replace conventional raw materials, contributing to the development of circular polyurethane systems.
This milestone adds to the company’s growing sustainability platform, complementing the ISCC PLUS certification of Dow’s polyols site in 2024.
ISCC PLUS is one of the world’s leading certification systems for verifying environmentally and socially sustainable supply chains, offering full traceability and validation of mass balance systems used to track alternative feedstocks from origin to final product.