CAS Registry Number

CAS 101-68-8 — 4,4'-Methylenebis(phenyl isocyanate)

4,4'-Methylenebis(phenyl isocyanate), commonly known as MDI, is a versatile organic isocyanate used primarily in the production of polyurethane foams, coatings, adhesives, and elastomers. It serves as a key reactive intermediate in polymer synthesis, offering excellent mechanical properties and thermal stability to final products. This chemical has a CAS number of 101-68-8, with the molecular formula CH2(C6H4NCO)2 and a molecular weight of 250.25 g/mol. It requires careful storage at -15 to -20°C and carries a **Danger** signal word due to its high reactivity and potential health hazards. Molekula supplies 4,4'-Methylenebis(phenyl isocyanate) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.