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A colorless aromatic hydrocarbon liquid. Diethylbenzene has similar solvating properties to Toluene and Xylenes but it evaporates slower. Diethylbenzene has been used as a solvent for Acryloid B-72; when used as a consolidant, the slow drying properties of diethylbenzene allow the polymer greater penetration time (Welsh 1980).

Synonyms and Related Terms

DEB; o-diethylbenzene


  • Fire risk. Flammable. Flash point = 55 C.
  • Moderately toxic.
  • Inhalation, ingestion and skin contact cause irritation and pain.
  • ThermoFisher SDS

Physical and Chemical Properties

Soluble in ethanol, benzene, carbon tetrachloride, ether. Insoluble in water.

Composition C6H4(C2H5)2
CAS 25340-17-4
Melting Point -31 C
Density 0.865 g/ml
Molecular Weight mol. wt.=134.2
Boiling Point 179.8-184.8 C

Resources and Citations

  • E. Welsh, "A Consolidation Treatment for Powdery Matte Paint" in Preprints for AIC Meeting in SanFancisco, May 1980, p. 141-150.
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Conservation Materials Ltd., Catalog

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