Liquid Polymeric Methylene Diphenyl Diisocyanate is a type of diisocyanate that is used primarily in the production of rigid polyurethane foams. It is a viscous liquid that is brown or amber in color and has a characteristic odor. This is a reactive chemical that is used as a raw material in the production of rigid foams, which are commonly used in the construction industry for insulation and other applications. It is also used in the production of adhesives, coatings, and elastomers. While using the Liquid Polymeric Methylene Diphenyl Diisocyanate appropriate safety precautions should be taken, such as wearing personal protective equipment, ensuring adequate ventilation, and avoiding skin contact and inhalation of vapors.