Product

Product Models
Insights
Solutions
Main Product
Methylene Diphenyl Diisocyanate
Segment
Chemicals
Main-Family
Functional Organic Products
Sub-Family
Isocyanates
Physical State

Solid

Product
Polymeric Diphenylmethane Diisocyanate
Abbreviation
PMDI
Names
Polymethylene Polyphenylisocyanates; Polymeric MDI; 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene
Production
Production Production  

Description

Technical grade, so-called "Polymeric MDI" (PMDI), are dark brown liquids at room temperature, which contain between 30% and 80% MDI together with higher molecular weight MDI homologues. PMDI are mixtures of Isocyanates with from 2 (MDI) to 6 Isocyanate Groups or Aromatic Rings, a molecular formula from C15H10N2O2 to C47H3030N6O6, a molecular weight from 250.3 to 778 g/mol, a melting point below 0°C and a boiling point above 210°C at 7 hPa.

Source: April 27, 1992. 4,4'-Methylene diphenyl isocyanate (MDI) and "polymeric MDI" (PMDI). Wiley

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Products Picture
Methylene diphenyl diisocyanate isomers and applications
  Product Communicator
Title Date
Identifiers
logo CAS Number
9016-87-9
logo EC Number
926-920-0
logo ECHA InfoCard
100.125.576
logo IUPAC Name
1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene
Chemical Data
Molecular Weight (g/mol)
500
Sulfur Content (wt%)
0
Specific Gravity
1.23
Crude Data
API Gravity
-16.46
Country
Product Settings
Default
Status
A
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Transaction Name Date
Modified by UserPic   Kokel, Nicolas 8/9/2025 12:51 PM
Added by UserPic   Kokel, Nicolas 10/27/2021 5:36 AM