Camphorquinone

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Structural formula
Structural formulas of both enantiomers of camphorquinone
Structural formulas of the ( R ) - (-) - form (left) and the ( S ) - (+) - form
General
Surname Camphorquinone
other names
  • 2,3-bornandione
  • 1,7,7-Trimethylbicyclo [2.2.1] -heptane-2,3-dione ( IUPAC )
Molecular formula C 10 H 14 O 2
External identifiers / databases
CAS number
  • 10373-78-1 ( racemate )
  • 10334-26-6 [( R ) - (-) - form]
  • 2767-84-2 [( S ) - (+) - form]
EC number 233-814-1
ECHA InfoCard 100.030.728
PubChem 25208
ChemSpider 23544
Wikidata Q2698440
properties
Molar mass 166.22 g mol −1
Physical state

firmly

Melting point
  • 197-203 ° C (racemate)
  • 200–203 ° C [( R ) - (-) - form]
  • 197-201 ° C [( S ) - (+) - form]
safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Camphorquinone is a chemical compound from the group of camphor derivatives and the most widely used photoinitiator for medical applications. Camphorquinone and an amine as a coinitiator are used to harden dental composites .

Camphorquinone is matched to the use of blue LED light (440–480 nm). An alternative photoinitiator is bis-4- (methoxybenzoyl) diethylgermanium (Ivocerin).

Individual evidence

  1. ↑ a b Data sheet Camphorquinone, 97% from Sigma-Aldrich , accessed on May 22, 2017 ( PDF ).
  2. ↑ Data sheet (1R) - (-) - Camphorquinone, 99% from Sigma-Aldrich , accessed on September 16, 2015 ( PDF ).
  3. ↑ Data sheet (1S) - (+) - Camphorquinone, 99% from Sigma-Aldrich , accessed on September 16, 2015 ( PDF ).
  4. ↑ Elbadawy A. Kamoun, Andreas Winkel, Michael Eisenburger, Henning Menzel: Carboxylated camphorquinone as visible-light photoinitiator for biomedical application: Synthesis, characterization, and application . In: Arabian Journal of Chemistry . Elsevier, 2014, doi : 10.1016 / j.arabjc.2014.03.008 ( PDF ).
  5. ↑ Light curing units
  6. ↑ Johanna Schirmer: Germanium saves time at the dentist . In: News from chemistry . tape 63 , no. 9 , September 1, 2015, p. 904-905 , doi : 10.1002 / nadc.201590290 .