Am.  Jour.  Pharm.  \ 
May,  1900.  J 
Preparations  of  Soap. 
215 
preparing  this  liniment  extemporaneously,  or  at  least  at  very  short 
notice,  it  occurred  to  us  that  a  soap  might  be  made  directly,  from 
materials  of  known  purity,  thus  insuring  from  the  very  first  an  ele- 
ment of  positive  knowledge  as  to  the  ingredients  entering  into  the 
preparation. 
The  following  formula  has  proven  quite  satisfactory,  is  easily 
followed,  requires  little  time  and  very  little  attention. 
Liquid  Soda  Soap :    This  is  the  stock  solution  or  (stock-pot) : 
Liquid  soda  soap   200 
Cotton  seed  oil   1,125 
Sodium  hydrate  (90  per  cent.)   175 
Alcohol   1,250 
Water   1,250 
The  liquid  soda  soap  in  this  case  is  only  added  to  facilitate  the 
process  of  saponification.  It  is  not  essential,  however,  as  the  mixture, 
owing  to  the  presence  of  a  comparatively  large  amount  of  alcohol, 
readily  saponifies. 
The  technique  ordinarily  followed  is  as  follows:  To  the  liquid 
soda  soap  in  a  large  bottle  add  about  250  parts  of  alcohol  and  750 
of  water,  shake  well  and  add  the  sodium  hydrate,  and  allow  it 
to  dissolve;  then  gradually  add  the  oil,  shaking  or  stirring  the 
mixture  constantly  ;  after  the  oil  has  been  added,  add  the  remaining 
portion  of  alcohol,  and  finally  the  water. 
The  resulting  product  should  be  light  golden  yellow  in  color, 
perfectly  clear,  transparent  and  limpid,  mixing  readily  with  alcohol, 
glycerin  or  carbolic  acid  without  precipitation. 
Soap  Liniment :  To  make  this  preparation  use  : 
Liquid  soda  soap   1,600 
Camphor   360 
Oil  of  rosemary   80 
Alcohol   5,5oo 
Water,  to  make   8,000 
Dissolve  the  oil  of  rosemary  and  camphor  in  the  alcohol,  add  the 
liquid  soda  soap,  and  finally  the  water.  The  whole  process  does 
not  require  more  than  a  few  minutes,  and  gives  a  product  that 
stands  well  in  all  weather,  not  precipitating  or  becoming  solid  even 
at  comparatively  low  temperatures. 
The  American  Pharmaceutical  Association  will  hold  its  forty-eighth 
annual  meeting  in  Richmond,  Va.,  beginning  May  7th. 
