2 4'-METHYLENEBIS(PHENYL ISOCYANATE)
2 4'-METHYLENEBIS(PHENYL ISOCYANATE) Basic information
- Product Name:
- 2 4'-METHYLENEBIS(PHENYL ISOCYANATE)
- Synonyms:
-
- 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-benzen
- 1-isocyanato-2-[(4-isocyanatophenyl)methyl]-Benzene
- 2,4’-methylenediphenylenediisocyanate
- benzene,1-isocyanato-2-[(4-isocyanatophenyl)methyl
- benzene,1-isocyanato-2-[4-isocyanatophenyl)methyl]-
- Diphenylmethane-2,4’-diisocyanate
- o-(p-isocyanatobenzyl)phenylisocyanate
- [4-(2-Isocyanatobenzyl)phenyl] isocyanate
- CAS:
- 5873-54-1
- MF:
- C15H10N2O2
- MW:
- 250.25
- EINECS:
- 227-534-9
- Mol File:
- 5873-54-1.mol
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2 4'-METHYLENEBIS(PHENYL ISOCYANATE) Chemical Properties
- Melting point:
- 36-40 °C(lit.)
- Boiling point:
- 376.3±35.0 °C(Predicted)
- Density
- 1.13±0.1 g/cm3(Predicted)
- vapor pressure
- 0.001Pa at 20℃
- Flash point:
- 110 °C
- storage temp.
- -20°C Freezer, Under inert atmosphere
- solubility
- Chloroform (Slightly), Methanol (Slightly)
- form
- Solid
- color
- White to Pale Beige
- Water Solubility
- 30μg/L at 22℃
- Stability:
- Moisture Sensitive
- EPA Substance Registry System
- Diphenylmethane-2,4'-diisocyanate (5873-54-1)
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Safety Information
- Hazard Codes
- Xn
- Risk Statements
- 20/21/22-36/37/38
- Safety Statements
- 26-36
- TSCA
- TSCA listed
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2 4'-METHYLENEBIS(PHENYL ISOCYANATE) Usage And Synthesis
Uses
2 4''-Methylenebis(phenyl Isocyanate) is a research reagent used for studies on emission behavior of reactive polyurethane hotmelt adhesives.
Synthesis
Crude MDI with a specific ring distribution is fed into a vacuum separation column. This yields diphenylmethane diisocyanate mixture A1 and polymeric MDI. Mixture A1 is then introduced into a distillation column where parameters are adjusted to obtain mixture B1 with a specific composition. B1 undergoes free chlorine concentration via a crystallization unit, controlling the endpoint temperature and residual liquid ratio, to yield intermediate C1. Intermediate C1 is blended with another diphenylmethane diisocyanate mixture D1 of specific composition. Stirring gives the final MDI-50 product.
2 4'-METHYLENEBIS(PHENYL ISOCYANATE)Supplier
BeiJing TOP Science Bio-Technology Co., Ltd.
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