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A colorless oil that smells like almonds. Benzaldehyde is primarily used in the organic synthesis of dyes. It is also used as a solvents for oils, natural resins, as well as some cellulose ethers, and cellulose esters. Benzaldehyde is found in some photographic chemicals.

Chemical structure


Synonyms and Related Terms

benzoic aldehyde; artificial oil of almond; benzenecarbonal

Hazards and Safety

  • Skin contact may cause irritation and redness.
  • Highly toxic by ingestion. Combustible.
  • ThermoFisher: SDS

Physical and Chemical Properties==== Other Properties

Miscible with ethanol, ether, oils. Slightly soluble in water.

Composition C6H5CHO
CAS 100-52-7
Melting Point -56.5 C
Density 1.0415 g/ml
Molecular Weight mol. wt. = 106.1
Refractive Index 1.5440-1.5464
Boiling Point 179 C

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1085
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998