256439

4,4′-Methylenebis(phenyl isocyanate)

98%

• Sinónimos: 4,4′-MDI, Bis(4-isocyanatophenyl)methane
• Fórmula lineal: CH₂(C₆H₄NCO)₂
• Número de CAS: 101-68-8
• Peso molecular: 250.25
• Beilstein: 797662
• Número CE: 202-966-0
• Número MDL: MFCD00036131
• Código UNSPSC: 12162002
• ID de la sustancia en PubChem: 24855527
• NACRES: NA.23

Propiedades

• Nivel de calidad: 200
• Ensayo: 98%
• Formulario: solid
• idoneidad de la reacción: reagent type: cross-linking reagent
• bp: 200 °C/5 mmHg (lit.)
• mp: 42-45 °C (lit.)
• densidad: 1.18 g/mL at 25 °C (lit.)
• temp. de almacenamiento: −20°C
• cadena SMILES: O=C=Nc1ccc(Cc2ccc(cc2)N=C=O)cc1
• InChI: 1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2
• Clave InChI: UPMLOUAZCHDJJD-UHFFFAOYSA-N

Descripción

Descripción general

4,4′-Methylenebis(phenyl isocyanate) (MDI) is an aromatic diisocyanates class of monomer that is widely used in the production of polyurethane plastics, foam insulation, coatings, adhesives, and sealants. It is highly reactive due to the presence of two isocyanate functional groups. MDI is known for its excellent strength, durability, and resistance to chemical and environmental damage, which makes it useful in resin composition, lithographic printing plates, coating films, optical films, image display devices, semiconductor devices, and polyurethane foam production.

Aplicación

4,4′-Methylenebis(phenyl isocyanate) can be used as a starting material to synthesize:

• Polyurethane cationomers, that are applicable in medical implants.
• A prepolymer for preparing self-healable polyurethane elastomers.

It can also be used as a cross-linking agent to synthesize PEBA (polyether-block-amide) copolymer with improved mechanical properties, which are mainly used in soles, medical tubes, aerospace parts, and chemical separation. Additionally, MDI is also used as a crosslinker to covalently modify graphene oxide (GO) and enhance the corrosion resistance of polystyrene coatings. The resultant polystyrene/GO-MDI composite coatings showed superior corrosion resistance to unmodified polystyrene coatings. This approach can potentially be used to improve the durability of materials in various industrial and biomedical applications.

Información de seguridad

• Pictogramas: GHS08,GHS07
• Palabra de señalización: Danger
• Frases de peligro: H315,H317,H319,H332,H334,H335,H351,H373
• Consejos de prudencia: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Clasificaciones de peligro: Acute Tox. 4 Inhalation - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation - STOT SE 3
• Órganos de actuación: Respiratory system
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): 411.8 °F - closed cup
• Punto de inflamabilidad (°C): 211 °C - closed cup
• Equipo de protección personal: dust mask type N95 (US), Eyeshields, Faceshields, Gloves