Am.  Jour.  Pharm. 
July,  1894. 
Pharmacopceial  Requisition. 
359 
oil  at  20°  C,  there  be  added  10  cc.  of  a  mixture  of  3  volumes  of 
alcohol  and  1  volume  of  water,  a  perfectly  clear  solution  should  be 
obtained." 
R.  A.  Cripps,  from  the  results  of  extensive  labors  of  his  own,  and 
those  of  other  workers,  suggests  that  the  official  description  of  the 
character  and  test  of  the  oil  should  be  modified  as  follows  :  Thick 
in  consistence,  pale  yellow  or  nearly  colorless,  etc.  At  15-5°  C.  it 
forms  a  clear  or  at  most  a  faintly  opalescent  solution  with  five  times 
its  volume  of  a  mixture  of  five  parts  rectified  spirit  with  one  fluid 
part  of  distilled  water.* 
M.  E.  Mensard  says  pure  oil  of  sandalwood  with  sulphuric  acid 
forms  a  viscid  liquid  which  becomes  pasty  and  is  rapidly  transformed 
into  a  solid  mass  adhering  to  the  glass.  The  mass  is  easily  recog- 
nized by  its  light,  grey  blue  or  greyish  color,  and  dusty  appearance 
it  assumes  with  age.  In  adulterated  specimens  the  resinous  mass 
does  not  solidify  and  remains  of  a  deep  tint  with  a  very  distinct 
lustre. 
For  a  long  time  oil  of  sandalwood  has  been  purchased  by  me 
from  one  source.  Partly  on  account  of  the  want  for  an  official  test, 
and  also  partly  on  account  of  faith  in  the  jobber,  no  tests  were  applied. 
This,  however,  did  not  prevent  the  precaution  of  reserving  a  portion 
of  the  oil  purchased  from  time  to  time  with  a  view  of  a  comparative 
examination  at  some  future  period.  Six  samples  of  oil  thus  pur- 
chased, together  with  a  sample  from  a  different  source,  along  with 
Santal  Midy  and  a  sample  of  West  Indian  oil  were  subjected  to  the 
solubility  and  sulphuric  acid  tests,  with  the  following  results : 
2  
3  
4  
5  
6  
7  ......  . 
Santal  Midy 
W.  Indian 
Soluble  in  a  mixture  of 
alcohol  3  parts,  water 
1  part,  at  200  C. 
not  soluble. 
soluble, 
not  soluble. 
1  cc.  soluble  in  4'cc.  ) 
of  alcohol  mixture.  J 
opalescent. 
not  soluble. 
With  H2S04  forms 
brownish  mass. 
brownish  grey  mass, 
oil  globules  surrounded 
by  a  garnet  liquid, 
brownish  grey,  with  oil 
globules, 
oil  globules  surrounded 
by  a  garnet  liquid. 
J  brownish  grey,  with  oil 
\  globules. 
greyish  mass. 
f  oil  globules  surrounded 
\        by  tinted  liquid. 
Price. 
per  lb 
$7  00 
7  00 
7  00 
7  00 
5  25 
4  50 
9  00 
3  50 
Color. 
f  distinctly  yel- 
\  low. 
pale  yellow. 
yellowish,  al- 
most colorless. 
pale  yellow. 
yellowish,  al- 
most colorless. 
pale  yellow. 
*  Proceedings  Am.  Ph.  Ass.,  vol.  -41. 
