Next to East Indian sandalwood oil, the west Australian oil is the most important of the various types of true sandalwood oils in perfumery. The oil is obtained by a combination of solvent extraction and steam distillation of the wood from a small west Australian wildgrowing tree, Eucaria Spicata. Since the wood is also suitable for woodcarving and incense making, the better lumber is exported as such to India and other eastern countries where it is used as sandalwood equal to the East Indian sandalwood. The Australian tree is a close relative to the parent tree of East Indian sandalwood oil. tsca definition 2008: extractives and their physically modified derivatives. santalum spicatum.
Sandalwood Essential Oil Australian CAS 8024-35-9
Australasian Sandalwood Oil is a pale yellow viscous liquid whose odor is soft, woody, extremely tenacious and somewhat balsamic in its delicate sweetness. Its topnote is distinctly different from that of the East Indian sandalwood oil, not sweet but rather dry-bitter, slightly resinous like myrrh oil, although not very pronounced. On drying out, the odor slowly becomes very similar to that of the East Indian oil. Apart from this characteristic topnote, there is very little difference in the overall odor between the East Indian oil and the Australasian oil.
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin