Date published: 2026-4-25

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4,4′-Diisocyanato-3,3′-dimethylbiphenyl (CAS 91-97-4)

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Alternate Names:
3,3′-Dimethylbiphenyl-4,4′-diyl Diisocyanate
CAS Number:
91-97-4
Molecular Weight:
264.28
Molecular Formula:
C16H12N2O2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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4,4′-Diisocyanato-3,3′-dimethylbiphenyl, or DMDM, is a part of the isocyanate family, characterized by the presence of the isocyanate functional group. Known for their reactivity and versatility, isocyanates are used across a spectrum of industrial and commercial uses, including polymers, adhesives, coatings, and paint production. 4,4′-Diisocyanato-3,3′-dimethylbiphenyl, a colorless, crystalline solid that dissolves in organic solvents, is utilized in the creation of polyurethane foams, coatings, and adhesives, and as an intermediate in the synthesis of other isocyanates. With an array of potential applications, 4,4′-Diisocyanato-3,3′-dimethylbiphenyl has been the subject of extensive research. It has been leveraged as a catalyst in polyurethane synthesis, a corrosion inhibitor, a polymer antioxidant, and a stabilizer for polyurethane foam production. Exploration of its potential applications extends to drug delivery systems and chemical sensors. While its exact mode of action remains unclear, it′s postulated that 4,4′-Diisocyanato-3,3′-dimethylbiphenyl forms robust covalent bonds with other molecules, restricting their ability to engage in additional chemical reactions. This bond-forming ability is believed to underpin its use as an antioxidant and a corrosion inhibitor. Additionally, 4,4′-Diisocyanato-3,3′-dimethylbiphenyl is thought to catalyze polyurethane polymerization and stabilize polyurethane foam production.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

4,4′-Diisocyanato-3,3′-dimethylbiphenyl, 25 g

sc-486204
25 g
$165.00