52  The  Oil  of  Argemone  Mexicana.      {A^b^ary  "191?" 
potassium  permanganate.  From  the  amount  of  oxalic  acid  obtained 
the  weight  of  glycerol  was  calculated.  It  was  found  to  be  15.48 
per  cent. 
6.1996  gms.  of  oil  was  saponified,  alcohol  evaporated  off;  it 
was  then  dissolved  in  water  and  extracted  with  ether.  The  ethereal 
extract  on  evaporation  left  behind  .1418  gm.  of  residue  or  the  oil 
contains  2.29  per  cent,  of  unsaponifiable  matter. 
The  elaidin  produced  by  the  oil  was  an  orange-colored,  dough-like 
mass.    The  reaction  was  very  violent. 
When  sulphur  chloride  was  added  to  a  solution  of  equal  volume 
of  oil  and  carbon  disulphide  a  violent  reaction  ensued,  the  whole 
mass  frothing  up;  a  very  sticky  mass  was  left  behind. 
When  10  gms.  of  sulphuric  acid  was  added  to  50  gms.  of  oil  the 
rise  of  temperature  was  65 0  C.    The  Maumene  test  was  65 0  C. 
The  rise  in  temperature  on  brominating  1  c.c.  of  oil  was  16.5 0  C. 
The  oil  gave  no  characteristic  color  reaction  with  sulphuric  acid 
even  when  it  was  diluted  with  carbon  disulphide.  The  color  was 
blackish-brown  in  the  former  case  and  in  the  latter  case  light  brown. 
On  shaking  the  oil  with  nitric  acid  it  acquired  a  deep  brown 
color  and  the  acid  a  deep  red  color.  On  heating  it  a  violent  reaction 
ensued,  a  pale  orange-colored  scum  was  formed  when  the  whole  was 
allowed  to  stand  over  night. 
For  the  determination  of  oxygen  absorption  power  a  quantity 
of  lead  was  prepared  by  Livache's  method ;  about  a  gram  of  it  was 
spread  upon  a  watch  glass  and  a  weighed  volume  of  the  oil  was 
spread  on  it  by  allowing  it  to  drop  on  different  places.  This  was 
weighed.  The  weights  on  each  successive  day  were  noted  till  there 
was  no  further  increase  in  weight. 
Gain  in  Weight  of  1.3437  gms.  of  Oil. 
Days. 
Increase  in  weight. 
Per  cent,  increase. 
1st  day. 
O.269 
2  .002 
2nd  day. 
O.  107 
O.8 
3rd  day. 
O . OO84 
O.6 
5th  day. 
O.OI52 
I  .  I 
6th  day, 
O.OO59 
O.44 
8th  day. 
O . OO65 
O.48 
9th  day. 
O.OOI5 
O.  I 
10th  day. 
No  increase. 
Total  gain  in  weight  till  constant  =  5.522. 
