Am.  Jour.  Pharm.  \ 
October,  1903.  J 
Drug  Market  for  1902-1903. 
493 
Podophyllin :  Commercial  grades  rarely  range  over  85  per  cent, 
soluble  in  alcohol.  Apparently  little  effort  is  made  to  remove  all 
extractive  matter.  Some  samples  are  apparently  powdered  alco- 
holic extracts.  Picropodophyllin  content  (Gordin's  method),  No.  I, 
17  per  cent.;  No.  2,  14.4  per  cent.    Standard,  22  per  cent. 
Potassium  bromide,  No.  1  :  Contained  notable  amount  of  bromate. 
Potassium  bromide,  No.  2:  American  brands  contain  I  per  cent, 
to  9  per  cent,  chlorides,  rarely  less  than  3  per  cent.  German  brands 
are  better,  usually  containing  1  per  cent,  to  2  per  cent. 
Potassium  bisulphate,  C.  P.  No.  1  :  Contained  8878  per  cent,  po- 
tassium bisulphate  ;  remainder  sulphate  and  moisture. 
Potassium  bisulphate,  C.  P.,  No.  2  :  Contained  33  per  cent,  potas- 
sium bisulphate ;  remainder  sulphate,  moisture  and  a  trace  of 
chloride. 
Potassium  citrate:  (1)  Contained  2.1  per  cent,  free  acid,  as  citric 
and  excess  of  chloride — off  color — acid  to  litmus  paper:  (2)  1.05 
per  cent,  free  acid  and  excess  of  chloride;  (3)  1.40  per  cent,  free 
acid  and  0.6  per  cent,  chloride. 
Potassium,  iodide,  C.  P.:  Contained  sulphate,  chloride,  iodate  and 
sodium  :  5  gm.  required  3  c.  c.  N/10  acid  to  neutralize  the  alkalinity. 
Not  even  suitable  for  medicinal  use. 
Pulsatilla  herb  :  One-third  true  plant ;  two-thirds  grass  and  other 
plants. 
Scammony  resin :  Mixed  with  resin  of  orizaba  jalap  (Ipomcea 
orizabensis.) 
Soda,  caustic,  pure  by  alcohol :  Contained  an  objectionable 
amount  of  chloride. 
Sodium  sulphite,  C.  P.,  crystals  :  Contained  80  per  cent,  sulphite, 
8.36  per  cent,  sulphate. 
Sodium  sulphite,  anhydrous :  Contained  63  per  cent,  anhydrous 
sulphite. 
Sodium  sulphite,  C.  P.,  anhydrous:  Contained  82  per  cent,  anhy- 
drous sulphite. 
Sodium  sulphite,  purified:  Contained  87  per  cent,  sulphite,  5-8 
per  cent,  sulphate. 
Spirit  of  camphor:  40  out  of  215  samples  made  with  wood  alco- 
hol.   (American  Druggist,  March  9,  1903.) 
Sulphur,  sublimed :  Some  samples  very  acid.  As  high  as  06  per 
cent,  free  H2S04  found. 
