), 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.
|Published (Last):||6 November 2006|
|PDF File Size:||18.1 Mb|
|ePub File Size:||13.73 Mb|
|Price:||Free* [*Free Regsitration Required]|
It is the most produced diisocyanate, accounting for MDI reacts with polyols in the manufacture of polyurethane. Well-known Reagent Company Product Information.
Any appropriate escape-type, mdss breathing apparatus Important additional information about respirator selection. Click here for information on selection of N, R, or P filters. Facebook Twitter Email Syndicate.
Chemfun Medical Technology Shanghai Co. A diisocyanate consisting of diphenylmethane with two isocyanate groups at the 4and 4′-positions. Persons developing sensitivity to isocyanates may have dangerous systemic reactions to extremely small exposures, including respiratory failure. This page was last edited on 10 Augustat Further purification entails fractionation of the MDI isomer mixture.
4,4′-Methylenediphenyldiisocyanate | C15H10N2O2 – PubChem
Raw materials And Preparation Products. However, it, like the other isocyanates, is an allergen and sensitizer.
LC 50 median concentration. Links with this icon indicate that you are leaving the CDC website.
The largest producer is Wanhua Group followed closely by Covestro. Strong alkalis, acids, alcohol [Note: Prevent skin contact Eyes: Acids and bases initiate polymerization reactions in these materials.
CDC – NIOSH Pocket Guide to Chemical Hazards – Methylene bisphenyl isocyanate
Human systemic effects by inhalation: Important additional information about respirator selection. Methylene diphenyl diisocyanatemost often abbreviated as MDI, is an aromatic di isocyanate. Eco-Profiles of the European Plastics Industry. Shanghai civi chemical technology co. In case of accident or if you feel unwell, seek medical advice immediately show label where possible.
Then, these diamines are treated with phosgene to form a mixture of isocyanates, the isomer ratio being determined by the isomeric composition of the diamine. MDI is the least hazardous of the commonly available isocyanates but is not benign.
Methylene diphenyl diisocyanate
The group at the 4-position is approximately four times more reactive than the group at the 2-position due to steric hindrance. Three isomers are common, varying by the positions of the isocyanate groups around the rings: Methylene bisphenyl isocyanate Minus Related Pages.
Handling MDI requires strict engineering controls and personal protective equipment. Prevent eye contact Wash skin: Mildly toxic by ingestion.
Methylene bisphenyl isocyanate
Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Views Read Edit View history. Lethal dose or concentration LDLC:.