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8.20797 Sigma-Aldrich

Diphenylmethane 4,4′-diisocyanate

(mixture of di-and triisocyanates) for synthesis

Synonym: Diphenylmethane 4,4′-diisocyanate, Methylenediphenylene diisocyanate

  • CAS Number 101-68-8

  • Empirical Formula (Hill Notation) C15H10N2O2

  • Molecular Weight 250.25

  •  MDL number MFCD00036131

  •  EC Index Number 202-966-0

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Properties

Quality Level   200
vapor pressure   0.066 hPa ( 20 °C)
autoignition temp.   >600 °C
potency   >5000 mg/kg LD50, oral (Rat)
  >9000 mg/kg LD50, skin (Rabbit)
expl. lim.   0.4 % (v/v)
bp   196 °C/7 hPa
mp   10 °C
transition temp   flash point 196 °C
solubility   2 g/L (decomposition)
density   1.239 g/cm3 at 20 °C
InChI   1S/C15H10N2O2/c18-10-16-14-5-1-12(2-6-14)9-13-3-7-15(8-4-13)17-11-19/h1-8H,9H2
InChI key   UPMLOUAZCHDJJD-UHFFFAOYSA-N
storage conditions   Store below +30°C.

Description

Analysis Note

Assay (GC, area%): 50.0 - 70.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.237 - 1.242
isomer Diisocyantes (GC, area%): ≤ 10.0 % (a/a)
triisocyanate (GC, area%): 20.0 - 40.0 % (a/a)
Identity (IR): passes test

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Target organs 
Respiratory system
WGK Germany 
WGK 1
Flash Point(F) 
235.4 °F - closed cup
Flash Point(C) 
113 °C - closed cup
Protocols & Articles
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