Chemical Name: Diphenyl-methane-diisocyanate 

Molecular Formula: C₁₅H₁₀N₂O₂

CAS No.： 101-68-8

White to light yellow solid, melting colorless to yellowish liquid. There is a irritating odor when heated, soluble in benzene, toluene, chlorobenzene, nitrobenzene, acetone, ether, ethyl acetate, dioxane, etc.It has good activity ,less volatility and lower toxicity to human body.

Diphenyl-methane-diisocyanate has three isomers of 4,4'-MDI,2,4'- MDIand 2,2'- MDI. Monomeric MDI is contained over 99% of 4,4'- MDI, known as also MDI-100, and less contents of 2,4'- and 2,2'- MDI. 

Monomeric MDI is the basic synthetic raw material in polyurethane industry. It is mainly used in shoe sole material , spandex, TPU and raw material of modified MDI