4,4′-Methylenebis(phenyl isocyanate)
ALDRICH/256439 - 98%
Synonym: 4,4′-MDI; Bis(4-
CAS Number: 101-68-8
Empirical Formula (Hill Notation): C15H10N2O2
Molecular Weight: 250.25
EC Number: 202-966-0
MDL Number: MFCD00036131
Linear Formula: CH2(C6H4NCO)2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 256439-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 256439-50G
| assay | 98% |
| bp | 200 °C/5 mmHg (lit.) |
| density | 1.18 g/mL at 25 °C (lit.) |
| form | solid |
| InChI | 1S/C15H10N2O2/c18-10-16-1 |
| InChI key | UPMLOUAZCHDJJD-UHFFFAOYSA |
| mp | 42-45 °C (lit.) |
| Quality Level | 200  |
| reaction suitability | reagent type: cross-linking reagent |
| SMILES string | O=C=Nc1ccc(Cc2ccc(cc2)N=C |
| storage temp. | −20°C |
| 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. |
| General description: | 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. |
| Packaging: | 5 kg in poly drum |
| Packaging: | 50, 500 g in glass bottle |
| Symbol |   GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H315 - H317 - H319 - H332 - H334 - H335 - H351 - H373 |
| Precautionary statements | P201 - P280 - P302 + P352 - P304 + P340 + P312 - P305 + P351 + P338 - P308 + P313 |
| Hazard Codes | Xn |
| Risk Statements | 20-36/37/38-40-42/43-48/20 |
| Safety Statements | 23-36/37-45 |
| RIDADR | UN 3335 |
| WGK Germany | WGK 1 |
| Flash Point(F) | 411.8 °F - closed cup |
| Flash Point(C) | 211 °C - closed cup |
| Purity | 98% |
| bp | 200 °C/5 mmHg (lit.) |
| mp | 42-45 °C (lit.) |
| Density | 1.18 g/mL at 25 °C (lit.) |
| Storage Temp. | −20°C |
| UNSPSC | 12162002 |