165-3 
bottle, in a dark, cool place. The tincture, separated from this mixture by filtra-- 
tion, has a deep orange-brown color by transmitted light, an odor of the bruised 
leaves, a bitter and astringent taste, and an acid reaction. 
_ CHEMICAL CONSTITUENTS.— 7/ujiz, C,, H,, O,,. This glucoside occurs 
in the green parts of the plant. It forms glistening, lemon-yellow, minute crystals, 
having an astringent taste, and soluble in both water and alcohol. 
Thujetin.*—C,, H,, O,,. When thujin is heated with a dilute mineral acid, 
it breaks down into glucose, and this new crystalline body, soluble in alcohol, 
insoluble in water: 
Thujin. Water. Glucose, Thujetin. 
io a OL Kg (H, O),= (C, H,, Ons T (C, H,, O,).- 
Thujenin, C,, H,, O,,. If, however, hydrochloric acid is used and the heating 
less prolonged, another crystalline body is yielded, having the composition above 
given, and differing chemically from thujetin by its containing (H,O), less. Its 
solubility is the same: 
Thujin. Water. Glucose. Thujetin. 
(C,, Pek O;,). + (H, 0). (C, H,, O,)o + (C,, H,, O,)s 
Thujetic acid, C,, H,, O,,. When thujin is dissolved in baryta water, it takes 
up one molecule of water, leaves its glucose in the menstruum, and forms a yellow 
solution, which, on boiling, deposits orange-yellow crystals of this acid, having the 
same solubility as the preceding resultants :+ 
Thujin. Water. Glucose, Thujetic acid. 
(C., ie Oy,). 3 H, O= (C, H., O,)s . C.. H, Q,,: 
Pinipicrin, C,, H,, O,,. This glucoside has been extracted from the young 
leafy branchlets of this tree as well as from the needles of Pinus sylvestris. It 
forms a yellow, bitter, amorphous, hygroscopic powder, soluble in both water and 
alcohol, and becoming liquid at 100° (212° F.). Like all glucosides, it breaks 
down under the addition of water, when heated with dilute mineral acids. In this 
instance, boiling with dilute sulphuric acid converts this body into glucose and 
ericinol : t 
Pinipicrin. Water. Glucose. Ericinol. 
Cy Hy, O. + (H, O), = (C, ee OD. 5 3 C, H,, O. 
Oil of Thuja.—This colorless or greenish-yellow volatile oil, has a camphor- 
aceous odor and taste, is soluble in alcohol, has a density of 0.925, boils at 190° 
(374° F.), and for the greater part at 193° to 197° (379.4° to 386.6° F.). Itisa 
mixture of two oxygenized oils. (Wittstein.) . 
* Thujogenin, Thujigenin. 
+ Fownes’s Elementary Chemistry, p. 582. 
t See under Ericacez, 100. 
