Camphene

  • 2,2- dimethyl-3 -methylene- norbornane
  • 2,2-dimethyl- 3-methylene -bicyclo [2.2.1] heptan
  • 79-92-5 ( mixture of enantiomers )
  • 565-00-4 [( RS)- camphene ]
  • 5794-03-6 [(R) - camphene ]
  • 5794-04-7 [( S)- camphene ]

Colorless, cubic crystals with terpentinartigem odor

Fixed

0.87 g · cm -3 ( 20 ° C)

  • 52 ° C [(R) - camphene ] or [( S)- camphene ]
  • 51-52 ° C [( RS)- camphene ]

158-159 ° C

3.3 hPa ( 20 ° C)

  • Insoluble in water ( 4.2 mg · l-1 at 20 ° C)
  • Moderately in ethanol, readily in chloroform

1.5441 (54 ° C)

Risk

> 5.000 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Camphene (stress on the last syllable: camphene ) is a white, waxy solid. It is a bicyclic monoterpene hydrocarbon, the molecular formula is C10H16. Occur as a racemate of the two enantiomers, D- and L- camphene, above.

Production

(-)- Camphene can be formed by rearrangement of the bornyl cation obtained by protonation and dehydration of - arises - borneol ().

Properties

In water camphene is almost insoluble in cyclohexane, alcohol and chloroform, it is readily soluble. The flash point of the racemate is 39 degrees Celsius.

Use

Camphene is an intermediate for the synthesis of flavors and odors. In addition, it is required for the preparation of camphor and toxaphene. It is a component of the essential oil of Kubebenpfeffers.

CAS registry number Vapor pressure Dangerous Substances Directive (67/548/EEC) Integrated Authority File
160562
de