Am.  Jour.  Pharm. 
June>  1877. 
Creasote  and  Carbolic  Acid, 
307 
creasote  is  insoluable  in  glycerin,  spec.  gr.  1*250,  while  carbolic  acid 
forms  a  clear  solution.  Beechwood  tar  creasote  behaves  quite  differently. 
It  does  not  dissolve  in  glycerin  but  when  shaken  with  it  cold  takes 
■up  92  per  cent.,  a  part  of  which  separates  again  on  warming,  only  50 
per  cent,  glycerin  remaining  dissolved.  An  addition  of  only  5  per 
cent,  carbolic  acid  produces  a  clear  solution  of  glycerin  in  creasote. 
But  if  10  per  cent,  or  more  of  oil  of  turpentine  is  added  to  beech- 
wood-tar  creasote,  it  becomes  insoluable  in  glycerin  like  Morson's 
•creasote.  The  insolubility  in  glycerin,  mentioned  on  Morson's  labels, 
is  therefore  only  a  criterion  for  an  impure  article.  The  behavior 
towards  ammonia,  as  mentioned  by  Read,  was  tried  with  solution  of 
ammonia  of  0*940  sp.  gr.  Beechwood-tar  creasote,  as  well  as  Morson's 
creasote,  took  up  only  15  per  cent,  of  ammonia  water,  and  the  addition 
of  10  per  cent,  carbolic  acid  did  not  produce  any  change;  but  15  per 
cent,  of  carbolic  acid  caused  5  per  cent,  more  of  the  ammonia  water  to  be 
taken  up.  It  was  ascertained  that  carbolic  acid  will  produce  a  clear 
solution  only  with  25  per  cent,  of  ammonia  water,  sp.  gr.  0*940,  and 
that  if  more  be  added,  will  separate  again.  Creasote  in  an  alcoholic 
solution  will  separate  on  the  addition  of  ammonia  water,  sp.  gr.  0*940, 
even  if  it  is  mixed  with  carbolic  acid,  while  an  alcoholic  solution  of 
carbolic  acid  will  remain  clear  on  the  addition  of  any  quantity  of 
ammonia  water. 
The  ammonia  which  was  not  taken  up  by  Morson's  or  beechwood- 
tar  creasote,  acquired  after  several  hours  a  dirty  yellow,  and  after  24 
hours  a  dirty  olive-green  coloration  ;  while  the  creasotes  saturated  with 
the  ammonia  water  became  yellow.  Alcoholic  solutions  of  the  cresotes, 
treated  with  water  of  ammonia,  produced  after  a  few  hours  a  beautiful 
olive-green  coloration. 
Carbolic  acid  treated  with  ammonia  became  violet,  while  the  undis- 
ammonia  remained  colorless. 
Chemically  pure  guaiacol  gave  with  ammonia  solution  (sp.  grav. 
0*940),  immediately,  a  white  crystalline  combination,  which  was  not 
soluble  in  an  excess  of  ammonia  ;  the  fluid  portion  not  taken  up  by 
the  guaiacol  became  intensively  green  after  several  hours. 
Experiments  made  with  pure  guaiacol  by  boiling  with  nitric  acid 
resulted  in  the  production  of  oxalic  and  picric  acids  ;  and  pure  guaia- 
col, creasol  and  creasote  gave  a  blue  reaction  with  anilin  and  hypochlo- 
