^DeV^Sr^lgiT'l  P(i<^tory  Control  of  Camphorated  Oil. 
563 
FACTORY  CONTROL  OF  CAMPHORATED  OIL  WITH 
THE  AID  OF  THE  SACCHARIMETER. 
By  Horace  North, 
Analyst  with  Lehn  &  Fink,  New  York. 
The  formula  for  camphor  liniment  ofificial  in  the  U.  S.  P.  VIII 
requires  that  200  gms.  of  coarsely  powdered  camphor  be  dissolved 
in  800  gms.  of  cottonseed  oil.  Solution  is  hastened  by  applying  a 
gentle  heat.  By  this  process  some  of  the  camphor  is  volatilized, 
the  loss  varying  with  the  degree  of  heat  and  the  time  necessary  to 
effect  solution,  so  that  the  finished  preparation  contains  less  than 
20  per  cent,  of  camphor.    It  is  good  policy,  however,  in  order  to 
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t  =  19.5  to  20°  C. 
CAMPHORATED  OIL 
avoid  disputes,  for  the  manufacturer  to  furnish  an  oil  containing 
fully  20  per  cent,  of  camphor.  The  present  article  deals  with  a 
simple  means  for  controlling  the  strength  of  the  product. 
Five  solutions  were  prepared  containing  5,  10,  15,  20  and  25 
gms.  of  camphor,  respectively,  and  sufficient  cottonseed  oil  in  each 
case  to  make  100  gms.  Refined  Japanese  camphor  of  medicinal 
quality  and  high-grade  cottonseed  oil  were  employed.  '  The  cam- 
phor was  granulated  as  finely  as  possible  in  a  mortar.  The  ingre- 
dients were  weighed  into  300  ex.  Erlenmeyer  flasks  and  the  latter, 
