— 82 — 



Part of the first two fractions solidified completely owing to a solid 

 body being separated out, which upon further examination was identified 

 as guajol, a sesquiterpene alcohol possessing the formula Ci 6 H 2 6 0. The 

 quantity of this substance was large enough to admit of its isolation and 

 recrystallisation. Its m. p. was then determined as between 91 and 92°, 

 the spec. rot. in 8°/o alcoholic solution was [«] D — 29,1° and when warmed 

 with concentrated formic acid water was eliminated. Guajol not being a 

 constituent of East Indian sandalwood oil, its presence could only have 

 been caused by the deliberate and fraudulent addition of guajac-wood oil, 

 which costs about one-third of the price of sandalwood oil. But this 

 adulteration by itself would not explain the abnormally high specific gravity 

 and the high saponification value of the oil under examination, nor of the 

 distillation residue. A further sophistication was required to explain these, 

 and that this sophistication consisted of a high-boiling benzoic ester was 

 proved by the isolation, from the saponification liquors of the distillation- 

 residue, of benzoic acid, m. p. 122°. This acid, too, is not to be found in 

 normal sandalwood oil and can only have been added to the sample by some 

 fraudulent manipulation. The added ester was probably benzyl benzoate. 



Sandalwood Oil, Guiana. P. Jeancard and C. Satie 1 ) have distilled 

 an essential oil from sandalwood which came from Guiana, but as to the 

 botanical origin of which nothing could be identified. The analytical 

 constants of the oil were as follow: d 15 o 0,9630 to 1,0122, « + 0°30' to 

 — 6°, sap. v. 13 to 65, sap. v. after acetylation 65 to 117, sol. in 1,5 to 

 12 vols. 75°/o and in 0,8 to 1,1 vols. 80% alcohol. The oil contained 

 from 59 to 80% of a fraction boiling between 155 and 160° (20 mm.) 

 (d 26 o 1,024 to 1,037; <* — 4°20' to —6°; sol. in 1,8 vols. 70% alcohol). 



The properties of the oil depend in a large measure upon the 

 nature of the raw material, for which reasons samples were distilled from 

 branches (I), trunks (II) and logs (III) from which the bark had been 

 removed. The constants of the oils distilled from these several lots were: — 



i ii in 



d 15 o 0,9665 0,9806 0,9968 



a — 6°!6' +0°30' 



Solubility in 85% ale. . . 0,4 0,4 0,3 



„ 80% „ . . 1 1 0,9 



„ 75% „ . . 1,7 10,8 20 



Sap. v 44,1 46,9 13,3 



Ester v. after acetylation 92,4 96,6 65,8 



Total of fraction boiling I • . 



at 155 to 160° (20 mm.) I U /o 5M /o 49 ' 8 /o 



Total of fraction boiling 

 at 160 to 165° (20 mm.) 



!) Perfum. and Essent. Oil Record 2 (1911), 70. 



J 9,4% 12,6% 24% 



