256439

4,4′-Methylenebis(phenyl isocyanate)

98%

• Synonyme(s) : 4,4′-MDI, Bis(4-isocyanatophenyl)methane
• Formule linéaire : CH₂(C₆H₄NCO)₂
• Numéro CAS: 101-68-8
• Poids moléculaire : 250.25
• Numéro Beilstein : 797662
• Numéro CE : 202-966-0
• Numéro MDL: MFCD00036131
• Code UNSPSC : 12162002
• ID de substance PubChem : 24855527
• Nomenclature NACRES : NA.23

Propriétés

• Niveau de qualité: 200
• Pureté: 98%
• Forme: solid
• Pertinence de la réaction: reagent type: cross-linking reagent
• Point d'ébullition: 200 °C/5 mmHg (lit.)
• Pf: 42-45 °C (lit.)
• Densité: 1.18 g/mL at 25 °C (lit.)
• Température de stockage: −20°C
• Chaîne 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
• Clé InChI: UPMLOUAZCHDJJD-UHFFFAOYSA-N

Description

Description générale

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.

Application

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.

Informations sur la sécurité

• Pictogrammes: GHS08,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H315,H317,H319,H332,H334,H335,H351,H373
• Conseils de prudence: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Classification des risques: 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
• Organes cibles: Respiratory system
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): 411.8 °F - closed cup
• Point d'éclair (°C): 211 °C - closed cup
• Équipement de protection individuelle: dust mask type N95 (US), Eyeshields, Faceshields, Gloves