282 
Oil  of  Camphor, 
Am.  Jour.  Pharm. 
June,  1889. 
Calculated  for  C10H12O2- 
Found. 
I. 
II. 
C— 7317 
H—  732 
0.— 19  51 
73-31 
7-26 
19-43 
73-29 
745 
1926 
100-00 
100-00 
100-00 
Vapor  density : 
I.  0*2135  gm.  subst.  replaced  32  cc.  air =5*74. 
II.  0-1820  gm.      "       "     27-2  cc.  air=5-76. 
Calculated  for  C10H12O2=5-68. 
Fraction  S.  250-280°  C. — The  treatment  of  the  oil  with  potassium 
hydrate  gave  a  larger  quantity  of  this  high  boiling  fraction  than  the 
direct  distillation  of  the  oil.  It  had  a  bluish  green  color,  which  with 
No.  I.  oil  was  not  permanent,  but  changed  on  several  days  standing 
to  violet,  afterwards  to  pink  and  then  to  light-brown.  The  same 
fraction  from  ~No.  II.  oil  was  darker  colored  and  has  not  faded  as  yet. 
A  three  per  cent,  solution  of  the  fraction,  boiling  at  260°  to  280°  C, 
in  glacial  acetic  acid,  gave  a  fine  violet  color  on  the  addition  of  a  few 
drops  of  concentrated  sulphuric  acid.  According  to  Wallach  this  would 
indicate  a  sesquiterpene.  The  quantity,  however,  was  too  small  to 
determine  whether  it  was  a  definite  compound  or  not. 
From  the  above  results  we  conclude  that  the  following  distinct  and 
definite  compounds  exist  in  this  sample,  with  a  close  approximation  of 
the  quantity  of  each  : 
Boiling  point. 
Per  cent. 
Formula. 
(1). 
From  145°-155°  0. 
150° 
0  40 
CioH16 
(2). 
a 
158°-161°  C. 
159° 
12-00 
Ci0Hi6 
(3). 
n 
167°-169°  C 
168° 
13-00 
Cj  0H16 
(4). 
u 
170°-171°  C. 
171° 
5*00 
Ci0H16 
(5). 
It 
•  175°-177°  C. 
176° 
15-00 
C10H18O 
(6). 
(( 
180°-182°  O. 
180° 
4-00 
C10H16 
(7). 
(i 
202° -206°  C. 
204° 
1000 
C10H16O 
(8). 
u 
212°-214°  C. 
213° 
30-00 
C10H18O2 
(9). 
a 
230°-235°  C. 
232° 
7-00 
Ci0Hio02 
(10). 
ti 
245°-248°  C 
247° 
2-00 
Ci0Hi  2O2 
(11). 
a 
250°-280° 
1-60 
Green  oil. 
