Diphenylmethane diisocyanate (MDI) is a chemical compound commonly used in the production of polyurethane products. It is a white solid with a strong, pungent odor and is classified as an aromatic isocyanate.
MDI is used in a variety of applications, including the production of foams for insulation and cushioning coatings for automotive and marine vehicles, and adhesives for construction and woodworking. It is also used in the production of elastomers, sealants, and adhesives for the shoe industry.
MDI is produced through the reaction of aniline and formaldehyde, followed by the reaction with phosgene to form diisocyanate. It is a highly reactive compound and must be handled with caution in industrial settings.
In conclusion, MDI is a widely used chemical in the production of polyurethane products, but it must be handled with caution due to its potential health effects. Proper protective measures should always be taken to prevent exposure to MDI in industrial settings.