oe 65 per Gone ‘by. ‘valine Geers ae zi 45 per cent, potash | 
~) We have not yet met with a colourless pimenta oil. ? - \ he 
2) The rotation’ of pimenta oil, according to our experience, lies. peter —0° 40" ai 
: oi of Rosemary (Olewm Rosmarini).. = F Colours or pale yellows 
‘soluble in 10 vols. 80 percent. alcohol; ester content (bornyl | Acel Ate 
2.5 per cent. *); total borneol not less han 10 per cent. oe Gaia 
Po) The ester content of good oils is often lower, we have observed va as low as eer cent 
¥ 
Oil of Santal, East Indian (Olewm Santali). — Pale yellow; dE 0.965. i 980 
p— 15° to —20°; soluble in'5 vols. 70 per cent. alcohol, forming | a solution | hic 
is slighty co to litmus. Santalol content not. less than 90 Ber cent. SD EAL ea 64 a 
The minimum value required.above corresponds to a content of 89.2 PEF cent., calculated for Cae. Satan 
— 
Oil of Sassafras (Oleum Sassafras). — Veto or reddish-yellow; 1 1 065 to 1.07 
250 | 
G+ 3 to + 4°); soluble in 2 vols. 90 per cent. alcohol, the solution is neutral to litt 
1) As lower limit, 1.063 would be more correct. ~ : A Neel a tix 
2) With own distillates, we have observed rotations down £0 VAs 29 (xe pO IN NS Eig 
Oil of Spearmint (Olewm Menthe viridis). — Colourless, yellows or ‘groanienaeton 
d= 0.917 to 0.9341); ap) — 38 to — 55°); soluble in 1 vol. 80 per cent. alcohol, formin, 
a clear solution; on further dilution, it usually aos cloudy; _ carvone e content 1 
less than 43 percent. by volume (sulphite method). : See: 
1) The lower limit for the’ Gen. was given, in the preceding edition of the vu. S. Ph, more | tl 
as 0.914. . ‘ Gave rk te Se DAN 
2) With good American spearmint oils, rotations down — 34° have Heon observed. 
Oil of Star Anise, vide Oil of Anise. ee a c. cane 
Terebene (Ter ebenum). — A liquid consisting of dipentene and other ‘hhydrocarl on 
obtained by the action of concentrated spiphurte, acid on oil of turpentine. Colourl 
taste. B.p. 160 to 172°; d®2 0.860 to 0.865; ap not exceeding +0018"; “solani 
3 vols. 95 per cent. alcohol, slightly soluble in water. Terebene does not redden 
litmus paper moistened with alcohol; on evaporation on a water bath, any esi 
remaining must not exceed 1 per cent. ie Ss erties 
Terpin Hydrate (Terpini Hydras). — Colourless, ost nee. rhombic prisms, 
odourless, and having a slightly aromatic and somewhat bitter taste. Heated 
_ litmus. 
