2l8 
Petrox  Preparations. 
Am.  Jour.  Pharm. 
May,  1911. 
both  as  20  per  cent,  formulas,  it  was  deemed  advisable  to  make 
our  formulas  correspond  with  the  usage  of  American  practice.  If 
5  per  cent.,  however,  be  adopted,  then  the  addition  of  Oleic  Acid 
will  not  be  required  in  this  formula. 
The  Creosote,  Guaiacol  and  Eucalyptol  Petroxolins  all  darken 
considerably  on  keeping  and  if  that  is  deemed  to  be  an  objection 
they  can  readily  be  prepared  as  wanted.  The  darkening  is  probably 
due  to  traces  of  iron  in  oleic  acid  and  is  not  serious  as  it  cannot 
affect  the  medicinal  action. 
PETROXOLINUM  EUCALYPTOLIS. 
Eucalyptol  Petroxolin.  Eucalyptol  Petrox. 
Eucalyptol   20  Gm. 
Liquid  Petroxolin    80  Gm. 
Mix  them. 
PETROXOLINUM  GUAIACOLIS. 
Guaiacol  Petroxolin.  Guaiacol  Petrox. 
Guaiacol    20  Gm. 
Oleic  Acid    5  Gm. 
Liquid  Petroxolin    75  Gm. 
Mix  them. 
PETROXOLINUM  HYDRARGYRI. 
Mercury  Petroxolin.  Mercury  Petrox. 
Mercury    30  Gm. 
Hydrous  Wool-Fat  15  Gm. 
Solid  Petroxolin    55  Gm. 
Triturate  the  Mercury  with  the  Hydrous  Wool-Fat  until  it  is 
distributed  and  globules  are  no  longer  visible  when  examined  with  a 
lens  magnifying  ten  diameters ;  then  add  the  Solid  Petroxolin  and 
mix  thoroughly. 
The  percentage  of  mercury  has  been  reduced  to  30  per  cent., 
which  in  a  base  so  readily  absorbed  is  believed  to  be  ample  to 
produce  salivation. 
PETROXOLINUM  ICHTHYOLIS. 
Ichthyol  Petroxolin.  Ichthyol  Petrox. 
Ichthyol   10  Gm. 
Oleic  Acid    5  Gm. 
Liquid  Petroxolin    85  Gm. 
Mix  them. 
