Am.  Jour.  Pharm. ) 
Sept.,  1882.  )■ 
Hypophosphifes  contaiiiing  Iron. 
439 
cloth,  drain  well,  and  express  firmly  ;  then  pour  upon  the  magma  one 
fluidounce  of  distilled  water,  and  express  again.  The  magma  may 
then  at  once  be  dissolved  by  the  aid  of  citrate  of  potassium. 
When  precipitating  this  compound  it  is  best  to  add  the  ferric  chlo- 
ride in  small  portions  at  a  time  and  to  stir  the  liquid  constantly.  Then 
allow  the  precipitate  to  subside,  so  that  the  su})ernatant  liquid  may 
become  clear  before  adding  the  next  portion  of  ferric  chloride.  Toward 
the  last  a  small  portion  of  the  clear  supernatant  liquid  is  removed  after 
each  addition  and  tested  with  dihited  ferric-chloride  solution,  allowing 
it  to  stand  for  several  minutes  if  no  immediate  turbidity  occurs.  If 
the  liquid  remains  clear  after  several  minutes'  standing,  the  precipita- 
tion may  be  regarded  as  complete,  and  the  straining  and  washing  may 
go  on  as  above  directed.  The  product  is  equal  to  128  grains  of  dry 
ferric  hypophosphite. 
Having  thus  explicitly  given  the  method  of  obtaining  the  magma 
of  ferric  hypophosphite,  these  directions  do  not  need  repetition  in  the 
formulas  for  the  different  preparations  given  below.  As  regards  its 
solution  by  the  aid  of  citrate  of  potassium,  it  is  only  necessary  to 
triturate  the  magma  with  the  specified  quantity  of  the  latter,  when 
partial  solution  will  occur,  and  complete  solution  follow^s  upon  the 
addition  of  water,  or  of  the  solution  of  the  other  hypophosphites. 
I.  Improved  Syrup  of  the  Hypophosphites  with  Iron. — Take  of  hypo- 
phosphite of  calcium  256  grains;  hypophosphite  of  sodium  192  grains; 
hypophosphite  of  potassium,  128  grains;  ferric  hypophosphite  (repre- 
sented in  the  magma  obtained  from  128  grains  of  hypophosphite  of 
calcium),  96  grains ;  citrate  of  potassium,  96  grains ;  white  sugar, 
13  troy  ounces ;  orange-flower  water,  1  fluidounce;  distilled  water,  a 
sufficiency.  Dissolve  the  calcium,  solium,  and  potassium  hypophos- 
phites in  7  fluidounces  of  the  water,  if  necessary,  by  the  aid  of  a  gentle 
heat,  and  filter  tlie  solution.  Triturate  the  magma  of  the  ferric  hyp(^- 
phosphitc  wtth  the  citrate  of  potassium,  add  the  solution  of  the  other 
hypophosphites,  and  when  complete  solution  is  efl^ected,  the  orange- 
flower  water  and  sufficient  distilled  water  to  make  the  whole  measure 
9  fluidouiHies.  In  this  dissolve  the  white  sugar,  without  heat,  and 
filter  the  resulting  syrup  through  paper.  A  fluidrachm  of  this  syrup 
contains  2  grains  of  the  calcium,  I  J  grain  of  the  sodium,  1  grain  of 
the  potassium,  and  f  grain  of  the  ferric  hypophosphite. 
II.  Syrup  of  Ilyjjophosphite  of  Iron.  —  Dissolve  128  grains  of  ferric 
liypopliosphite  (represented  in  the  magma  from  150  grains  of  h3^po- 
