TDI / 2,4-Toluene Diisocyanate / 2,6-Toluene Diisocyanate Compatibility with Rubber O-Rings & Gaskets

Toluene diisocyanate, widely known as TDI, is an aromatic diisocyanate compound with the molecular formula C9H6N2O2. It is typically supplied as a clear to pale yellow liquid and serves as a critical intermediate in polyurethane production. Its reactive isocyanate groups allow it to chemically bond with polyols, forming durable polymer networks used in a wide range of materials. TDI is a primary raw material in the manufacture of flexible polyurethane foams used in furniture, automotive seating, and cushioning products. It is also utilized in rigid foam insulation, specialty coatings, sealants, adhesives, and elastomeric components. By adjusting formulation ratios and processing conditions, manufacturers can tailor the mechanical strength, flexibility, and density of polyurethane products derived from toluene diisocyanate. Due to its high toxicity and potential to cause respiratory sensitization, skin irritation, and other serious health effects, strict safety controls are mandatory when handling TDI. Exposure may occur through inhalation of vapors or through skin contact. Proper storage in sealed containers, controlled ventilation systems, and the use of appropriate personal protective equipment are essential to reduce risk. Adherence to regulatory standards and established handling procedures ensures safer use in industrial polyurethane manufacturing environments.

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