TWA 0.05mg/m3 (0.005ppm) C 0.2mg/m3 (0.020ppm) [10-minute][1]
IDLH (Immediate danger)
75 mg/m3[1]
Related compounds
Related Isocyanates
Toluene diisocyanate
Naphthalene diisocyanate
Hexamethylene diisocyanate
Isophorone diisocyanate
Related compounds
Polyurethane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Nverify (what is YN ?)
Infobox references
Chemical compound
Methylene diphenyl diisocyanate (MDI) is an aromatic diisocyanate. Three isomers are common, varying by the positions of the isocyanate groups around the rings: 2,2′-MDI, 2,4′-MDI, and 4,4′-MDI. The 4,4′ isomer is most widely used, and is also known as 4,4′-diphenylmethane diisocyanate.[3] This isomer is also known as Pure MDI. MDI reacts with polyols in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the global market in the year 2000.[4]
^ abcdNIOSH Pocket Guide to Chemical Hazards. "#0413". National Institute for Occupational Safety and Health (NIOSH).
^ abc"Methylene bisphenyl isocyanate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
hexamethylene diisocyanate. HDI is considered toxic, and its pulmonary toxicity has been studied as well as its oligomers. Isophorone diisocyanateMethylene diphenyl...
formaldehyde resin, polyoxymethylene plastics, 1,4-butanediol, and methylenediphenyldiisocyanate. The textile industry uses formaldehyde-based resins as finishers...
those used in polyurethane (PUR) except that the proportion of methylenediphenyldiisocyanate (MDI) is higher and a polyester-derived polyol is used in the...
chlorofluoroalkane blowing agents, inexpensive polyether polyols, and methylenediphenyldiisocyanate (MDI) allowed polyurethane rigid foams to be used as high-performance...
melamine, and phenol (e.g., Bakelite). It is a precursor to methylenediphenyldiisocyanate ("MDI"), a precursor to polyurethanes. The second main aldehyde...
for diisocyanates in the year 2000 was 4.4 million tonnes, of which 61.3% was methylenediphenyldiisocyanate (MDI), 34.1% was toluene diisocyanate (TDI)...
like toluene diisocyanate (TDI), methylenediphenyldiisocyanate (MDI), hexamethylene diisocyanate (HDI), and isophorone diisocyanate (IPDI). In these...
nonstructural, nonwaterproof); isocyanate-based glue (or PMDI poly-methylenediphenyldiisocyanate based) in inner regions with melamine-urea-formaldehyde or...
and mechanical properties of poly(L-lactic acid) with 4,4-methylenediphenyldiisocyanate". Polymers for Advanced Technologies. 17 (6): 439–443. doi:10...
January 2001. Initially, the listed company only owned the methylenediphenyldiisocyanate (MDI) production line of the former Yantai synthetic leather...
formaldehyde. The diamines are condensed with phosgene to give methylenediphenyldiisocyanate, a precursor to urethane polymers. Other uses include rubber...
emulsion is reacted with an isocyanate (usually polymeric methylenediphenyldiisocyanate) and a cement and construction aggregate. This is applied fairly...
and they leave a good surface finish on the casting. MDI (methylenediphenyldiisocyanate) is also a commonly used binder resin in the foundry core process...
used in exposed surfaces in more costly designs. Polymeric methylenediphenyldiisocyanate (pMDI) or polyurethane (PU) resins: expensive, generally waterproof...
Island, an island off the coast of the U.S. state of Maine Methylenediphenyldiisocyanate, a chemical Michelson Doppler Imager, an instrument on board...
cost of $100 million. This facility has South Asia's first methylenediphenyldiisocyanate (MDI) splitter for processing crude MDI. BASF has 8 production...
toluene diisocyanate (TDI) can be expected to produce toluene diamine as a side reaction, whereas those based on methylenediphenyldiisocyanate produce...