The
rhizomes (roots) must be stored in a cool, dry location for three years to develop the scent. The fresh rhizomes are almost
odorless. The
distilled oil solidifies in the receiver as a wax-like and cream-colored mass known as orris concrete. It is solid because of the high content of
myristic acid (85%), a white
stearin-like substance. Orris concrete melts when it reaches around body temperature. It has a woody, fatty-oily, yet distinctly violet-like odor: sweet floral, warm & tenacious with a fruity undertone. Orris concrete is used in
perfumery when the presence of
myristic acid is not prohibitive, e.g.: in soap perfumes where the weak acid only acts as a fixative. The
methyl and
ethyl esters of myristic acid are often used for blending in violet type perfume bases. The high costs of orris oil production limit its application. == References ==