Am.  Jour.  Pharm. 
June,  1889. 
Oil  of  Camphor. 
281 
solution  of  potassium  hydrate  was  separated,  and  the  oil  distilled  in 
vacuo.  That  portion  which  would  have  distilled  at  the  ordinary  pres- 
sure at  230-250°  C,  was  collected,  and  on  repeated  rectification,  at 
ordinary  pressure,  a  fraction  boiling  between  230-235°  was  obtained. 
It  had  the  physical  and  chemical  properties  of  safrol.  It  was  color- 
less, highly  refractive,  with  the  characteristic  sassafras  odor,  of  sp.  gr. 
l'lOl  at  16°  C,  and  almost  inactive  on  polarized  light=  +  1*8°. 
Results  of  combustions  as  follows  : 
1.  U.lobz  gm.  subst. 
yielded  0'507  gm.  C02  and  0*1050  gm.  H20. 
II.  0  1921    "  " 
"    0-5192  "  CO. 
>and  0-1130  gm.H20. 
Calculated  forC10H10O2 
Found. 
I. 
II. 
C— 74-07 
74-26 
7371 
H—  617 
6.26 
6-53 
0-1976 
19-48 
19-76 
100-00 
10000 
100-00 
Vapor  density  : 
I.  0*1823  gm.  subst.  replaced  28  cc.  air  = 
5-59. 
II.  0-1670    "  " 
25-8  cc.  "  = 
5-56. 
Calculated  for  C10Hl0O2  =  5-61. 
Fraction  R.  245°-248°  C,  b.  p.  247°  C. 
Three  litres  of  the  oil  were  treated  with  aqueous  solution  of  mode- 
rately strong  potassium  hydrate,  and  subjected  to  distillation  in  vacuo, 
until  the  lighter  boiling  fractions  were  removed.  The  aqueous  solu- 
tion containing  the  eugenate  of  potassium  was  separated  and  decom- 
posed by  a  mineral  acid.  The  separated,  dark,  oily  layer  col- 
lected, dried  and  rectified  in  vacuo,  gave  a  product  with  a  boiling 
point  at  the  ordinary  pressure  of  247°  C.  It  had  a  yellowish  color,  be- 
coming darker  on  exposure  to  light,  was  strongly  refractive,  with  a 
decided  odor  of  cloves  and  a  sharp  burning  taste. 
It  had  a  specific  gravity  of  1*057  at  16°  C,  and  was  almost  inactive 
on  polarized  light— +1*4°. 
Results  of  analysis  gave  the  formula  C10H12O2. 
I.  0*2258  gm.  subst.  gave  0*607  gm.  C02  and  0-1475  gm.  H20. 
II.  0-1788   "      "      "    0-4805  gm.  C02  and  0-120  gm.  H20. 
