), Back Directory. [msds information] 1,1′-Methylenebis(4-isocyanatobenzene)( ).msds. Page 1. Page 2. •. •. •. ³. ³. ³. Page 3. ³. Page 4. ³. ³. ³. ³. ³. ³. ³. ³. ³. ³. Page 5. ≥. ≥. Page 6. METHYLENE BISPHENYL. ISOCYANATE. DOT Number: UN DOT Hazard Class: (Poison). NAERG Code: CAS Number: Hazard rating.
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It is a potentially violently reactive material towards water and other nucleophiles. A skin and eye irritant. In 4,4′-MDI, the two isocyanate groups are equivalent but in 2,4′-MDI the two groups display highly differing reactivities.
Prevent skin contact Eyes: The group at the 4-position is approximately four times more reactive than the group at the 2-position due to steric hindrance. From Wikipedia, msfs free encyclopedia. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer ].
Soap wash immediately Breathing: Any appropriate escape-type, self-contained breathing apparatus Important additional information about respirator selection.
Methylene diphenyl diisocyanate
See protection codes Skin: Reacts violently with alcohols. Hangzhou Yuhao Chemical Technology Co. MDI is the least hazardous of the commonly available isocyanates but is not benign.
Links with this icon indicate that you are leaving the CDC website. Shanghai Hanhong Scientific Co. Three isomers are common, varying by the positions of the isocyanate groups around the rings: The major application of 4,4′-MDI 110-68-8 the production of rigid polyurethane. Methylene diphenyl diisocyanatemost often abbreviated as MDI, is an aromatic di isocyanate.
A Source Book and Practical Guide. Linking to a msdds website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. Wear suitable protective clothing and gloves. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat.
Strong alkalis, acids, alcohol [Note: Well-known Reagent Company Product Information. MDI reacts with polyols in the manufacture of polyurethane. Click here for information on selection of N, R, or P filters. Retrieved from ” https: Maya High Purity Chemicals. BeiJing Hwrk Chemicals Limted.
Methylene diphenyl diisocyanate – Wikipedia
Eco-Profiles of the European Plastics Industry. Tianjin heowns Biochemical Technology Co. Prevent eye contact Wash skin: Incompatible with strong oxidizing agents.
It’s used to make plastics. Acids and bases initiate polymerization reactions in these materials. Toluene diisocyanate Naphthalene diisocyanate Hexamethylene diisocyanate Isophorone diisocyanate.