Difference between revisions of "Benzophenone"

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==Properties==
 
==Properties==
 
===Chemical===
 
===Chemical===
 +
Benzophenone can be reduced by [[sodium]] metal to produce the intensely blue coloured benzophenone ketyl radical. This is highly reactive towards [[water]] and [[oxygen]] so it can be used as an indicator of solvent dryness.
  
 +
Benzophenone is a strong UV absorber, owing to cross-conjugation. This results in its use as a UV photoinitiator in some UV curing resins. Derivatives of benzophenone are often used in sunscreens and as an additive to prevent the UV-induced degradation of polymers.
  
 
===Physical===
 
===Physical===

Revision as of 22:41, 2 December 2018

Benzophenone
Benzophenone.png
Names
IUPAC name
Diphenylmethanone
Other names
Benzophenone
Diphenyl ketone
Benzoylbenzene
Benzoylphenyl
Diphenylmethanone
Identifiers
119-61-9
Jmol-3D images Image
Properties
C13H10O
Molar mass 182.22
Appearance White solid
Density 1.11
Melting point 48.5 °C (119.3 °F; 321.6 K)
Boiling point 305.4 °C (581.7 °F; 578.5 K)
Insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Benzophenone is the simplest di-aryl ketone.

It is often used in drying solvents together with sodium metal.

Properties

Chemical

Benzophenone can be reduced by sodium metal to produce the intensely blue coloured benzophenone ketyl radical. This is highly reactive towards water and oxygen so it can be used as an indicator of solvent dryness.

Benzophenone is a strong UV absorber, owing to cross-conjugation. This results in its use as a UV photoinitiator in some UV curing resins. Derivatives of benzophenone are often used in sunscreens and as an additive to prevent the UV-induced degradation of polymers.

Physical

White solid

Availability

Available from lab suppliers.

Preparation

Delete this section if not applicable

Projects

Handling

Safety

Storage

Disposal

References

Relevant Sciencemadness threads