Upon distillation of the Australian yellow xanthorrhaea resin (acaroid resin, or yellow grass tree gum) from Xanthorrhaea hastilis, R. Br. (family Liliaceae) Schimmel & Co.3) obtained 0,37 p. c. of a yellow oil with a storax-like odor: d15o 0,937; d 15o 0,937; aD _3° 14'; S. V. 4,9; E. V. 69,4. The free acid was isolated by shaking with dilute sodium hydroxide solution and identified as cinnamic acid by means of its melting point, 133°. From the saponification liquor, cinnamic acid was likewise separated to a fairly considerable extent, for 200 g. of oil yielded about 40 g. of cinnamic acid recrystallized from water.
1) E.Opitz, Arch, der Pharm. 228 (1891), 265. 2) Pharmaceutical Journ. HI. 10 (1880), 613. 3) Report of Schimmel & Co. October 1897, 60.
The saponified oil boiled between 145 and 240°. From the lower distillates a fraction 145 to 150° with the properties of styrene was obtained (m. p. of styrene dibromide 74 to 75°).
From the red acaroid resin, which is obtained from Xanthor-rhcea australis, R. Br. and several other species of Xanthorrhcea, 0,33 p. c. of a reddish-brown oil were obtained1) that had a pleasant odor reminding of tolu and Peru balsams: d20o 0,9600; aD inactive; S. V. 47,6; E. V. 37,5. It contained cinnamic acid, free as well as ester, also styrene.