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Camphor (/ ˈ k æ m f ər /) is a waxy, colorless solid with a strong aroma. [5] It is classified as a terpenoid and a cyclic ketone.It is found in the wood of the camphor laurel (Cinnamomum camphora), a large evergreen tree found in East Asia; and in the kapur tree (Dryobalanops sp.), a tall timber tree from South East Asia.
Camphor laurel invades rainforests and pastures, and also competes against eucalyptus trees, certain species of which are the sole food source of koalas. In its favour, however, younger camphor laurel trees can quickly develop hollows, which can be utilised by wildlife, whereas natives can take hundreds of years to develop hollows.
Well-known terpenoids include citral, menthol, camphor, salvinorin A in the plant Salvia divinorum, ginkgolide and bilobalide found in Ginkgo biloba and the cannabinoids found in cannabis. The provitamin beta carotene is a terpene derivative called a carotenoid.
Both naphthalene and 1,4-dichlorobenzene undergo sublimation, meaning that they transition from a solid state directly into a gas; this gas is toxic to moths and moth larvae. [1] Due to the health risks of 1,4-dichlorobenzene, and flammability of naphthalene, other substances like camphor are sometimes used.
Camphor, borneol, eucalyptol and ascaridole are examples of bicyclic monoterpenoids containing ketone, alcohol, ether, and bridging peroxide functional groups, respectively. [ 3 ] [ 4 ] Umbellulone is another example of bicyclic monoterpene ketone.
Camphora parthenoxylon is known variously as Selasian wood, [4] saffrol laurel, [5] or Martaban camphor wood in English. [6] It has the outdated heterotypic synonym Laurus porrecta ( Roxb. The species name parthenoxylon derives from parthenos xylon ( Greek : παρθενός ξύλον ), meaning "virgin wood".
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Dryobalanops aromatica, commonly known as Borneo camphor, camphor tree, Malay camphor, or Sumatran camphor, [3] is a species of plant in the family Dipterocarpaceae. The species name aromatica is derived from Latin ( aromaticus meaning spice-like) and refers to the smell of the dammar (resin).