Acaroid Resin

#### Acaroid. The so-called **Acaroid Resin **is a natural oleo-gumresin, exuded from various species of **Xanthorrhoea**** **trees in Australia, Tasmania, and New **Zealand.**** **There are two **Acaroids**** **of interest for perfumery: - Yellow **Acaroid**** **from **Xanthorrhoea**** ****Hastilis** and ##### Red Acaroid from Xanthorrhoea Australis. The crude material is dark orange to dark brown in lumps of 2 to *5** *cms. of diameter, mostly round but on one side fiat with visible marks from the bark of the tree, showing bark surface and leaf base scars etc. The odor of the "resin" is faintly balsamic-cinnamic and sweet. Other species are important to the lacquer industry. From the above two natural materials are prepared tinctures or resinoids. **Acaroid contains**** **more than 70% alcohol-soluble matter. The prepared resinoid suffers from the disadvantage of being very dark of color. **Acaroid **resinoid and **Acaroid **tincture are excellent fixatives for low-cost soap perfumes or industrial perfumes, particularly those of sweet balsamic type. The odor type of Acaroid is quite similar to that of peru, styrax, and tolu balsams, however, much weaker in odor strength. Apart from the color drawback, Acaroid could well replace the Sumatra benzoin, and it blends well with cinnamic aldehyde, e.g. in an artificial cassia oil. In this case, the dark color of the Acaroid is no disadvantage at all. **Acaroid**** **is readily available in ton-lots, and it is one of the most inexpensive of the natural oleo-gum-resins.