AlMar°chr"  1921 rm' }    Ur ethanes  of  Thymol  and  Carvacrol.  209 
Sodium  Nitrosothymol. — Nitrosothymol  dissolves  in  sodium 
hydroxide  only  slowly  to  a  clear  solution  of  a  reddish-brown  color. 
It  forms  a  bright  brownish-red  mass  of  finely  needle  shaped  crys- 
tals. It  pulverized  to  a  light  brown  (cocoa)  colored  powder.  This 
was  dissolved  in  absolute  alcohol  and  poured  into  an  excess  of 
ether.  The  precipitate  was  amorphous,  at  first  of  rather  an  olive - 
green  color.  It  quickly  crystallized  in  brownish-red  needles  and  on 
drying  formed  brown  or  bronze  lumps  with  an  orange  fracture.  It 
is  stable  at  ioo°  and  the  sodium,  determined  as  sulphate,  is  calculated 
for  the  dried  product.  It  decomposes  suddenly  on  heating,  intu- 
mescing  splendidly,  and  spontaneously  with  sulphuric  acid,  giving  a 
red  sublimate. 
0.4407  g.  lost   0.0622  g.  at  ioo° 
I.  0.2004  g.  gave  0.0618  g  Na2SO„ 
II.  0.2013  g.i  gave  0.0617  g.  Na2S04 
Found         Calc.  for  C10H12NO£Na 
Loss  at  ioo0  14.HP.  c.         iH20  =   8.23  p.  c. 
2H20  —  15.20  " 
Sodium  on  dried  basis  I.    11.64  p.  c.  11.44  p.  c. 
II.    11.56  " 
The  yield  of  sodium  salt  recovered  in  this  manner  was  95.7  per 
cent,  by  weight.    It  required  much  ether  for  its  precipitation. 
Potassium  Nitrosocarvacrol.  Nitrosocarvacrol  dissolves  very 
readily  in  potassium  hydroxide,  giving  a  clear  reddish-brown  solu- 
tion. Evaporation  of  the  solution  left  a  crust  of  radiating  clusters  of 
very  fine  needles.  The  mass  was  blue-black  in  color,  very  finely 
granular  and  had  not  dried  completely  before  taking  up  in  abso- 
lute alcohol.  This  is  less  readily  soluble  than  the  sodium  com- 
pound. It  came  out  from  ether  as  a  tar,  partially  solidifying  slowly 
to  a  blue-black  mass  like  iodine.  The  solid  is  bright  and  pulverizes 
to  a  bright  green  powder.  A  tar  remained  which  solidified  on  ex- 
posure. It  was  dried  at  ioo0  and  the  potassium  estimated  as  sulphate. 
The  mass  swelled  up  slightly  on  heating  and  a  red-brown  sublimate 
formed. 
0.3207  g.  lost  0.0231  g  at  ioo0 
I.  0.2000  g.  gave  0.0762  g.  K2S04 
II.  0.2004  g.  gave  0.0758  g.  K2S04 
Found         Cald  for  C10HI2NO2K 
Loss  at  ioo0  7.20  p.  c.         iH20  =   7.66  p,c. 
Potassium  on  dried  basis  1. 18.42p.1c.  18.00  " 
II.  18.30  " 
This  was  recovered  from  ether  in  only  81  per  cent,  yield  by 
weight. 
