Oshima: Formosan Termites 



367 



Table XXIV. — Physical and chemical properties of camphor green oil. 



[ Poiaeuille's capillary viscosimeter modified by Ostwald was Sed in the determination of 



viscosity.] 



SAMPLE A. 



Color 



Dark Brown. 



Specific gravity (at 15° C.) 



0.9805 



Refractive index (at 17.5° C.) 



1.5035 



Optical rotatory power 



Unknown. 



Viscosity (at 20° C.) 



1.38 



Fractional distillation (ordinary atmosphere 



pressure) : 





Per cent. 



Below 210 



1.0 



210 to 230 



26.0 



230 to 240 



23.0 



240 to 260 



25.0 



260 to 300 



22.0 



Residue 



3.0 



SAMPLE B. 





Color 



Greenish brown. 



Specific gravity (at 20° C.) 



0.984 



Refractive index (at 20° C.) 



1.504 



Optical rotatory power 



Unknown. 



Viscosity (at 20° C.) 



1.67 



Fractional distillation : 



Per cent. 



Below 210 



1.0 



210 to 230 



10.0 



230 to 240 



26.0 



240 to 260 



25.0 



260 to 300 



35.0 



Residue 



3.9 



SAMPLE C. 





Color 



Yellowish brown. 



Specific gravity (at 20° C.) 



1.00 



Refractive index (at 20° C.) 



1.511 



Optical rotatory power 



+ ; degree unknown 



Viscosity (at 20° C.) 



1.83 



Fractional distillation : 



Per cent. 



Below 210 



0.5 



210 to 230 



2.0 



230 to 240* 



6.0 



240 to 260 



42.0 



260 to 300 



44.0 



Residue 



4.0 



167553- 



