Tolylene 2,4-Diisocyanate

• CAT Number: R053436
• CAS Number: 584-84-9
• Molecular Formula: C9H6N2O2
• Molecular Weight: 174.16
• Purity: ≥95%
• Synonyms: 2,4-Diisocyanato-1-methylbenzene; Isocyanic Acid 4-Methyl-m-phenylene Ester; 1,3-Diisocyanato-4-methylbenzene; 2,4-Diisocyanato-1-methylbenzene; 2,4-Diisocyanatotoluene; 2,4-TDI; 2,4-Toluene Diisocyanate; 2,4-Toluylene Diisocyanate; 2,4-Tolylene Diis
• Storage: -20°C
• IUPAC Name: 2,4-diisocyanato-1-methylbenzene
• InChI: InChI=1S/C9H6N2O2/c1-7-2-3-8(10-5-12)4-9(7)11-6-13/h2-4H,1H3
• InChIKey: DVKJHBMWWAPEIU-UHFFFAOYSA-N
• SMILES: CC1=C(C=C(C=C1)N=C=O)N=C=O

Tolylene 2,4-Diisocyanate (CAT: R053436) is an aromatic diisocyanate with the molecular formula C₉H₆N₂O₂, widely used in the production of polyurethanes. It features a toluene ring substituted with two highly reactive isocyanate groups at the 2- and 4-positions. TDI is a clear to pale yellow liquid with a sharp, irritating odor and is primarily employed in manufacturing flexible polyurethane foams, coatings, adhesives, and sealants. Its reactivity with polyols forms durable polymers used in automotive, construction, and furniture industries. TDI is toxic and volatile, requiring careful handling under controlled conditions with proper ventilation and personal protective equipment to ensure workplace safety.