﻿AND 
  SOME 
  OF 
  ITS 
  DERIVATIVES. 
  415 
  

  

  Biethylomeconate 
  qf 
  Ammonia. 
  — 
  Some 
  of 
  the 
  ether 
  was 
  dissolved 
  in 
  strong, 
  

   nearly 
  absolute, 
  alcohol, 
  and 
  dry 
  ammoniacal 
  gas 
  was 
  passed 
  into 
  the 
  fluid 
  ; 
  the 
  

   whole 
  soon 
  became 
  a 
  nearly 
  solid 
  yellow 
  mass. 
  When 
  this 
  was 
  freed 
  by 
  pres- 
  

   sure 
  from 
  the 
  ammoniacal 
  alcohol, 
  it 
  was 
  found 
  to 
  crystallise 
  from 
  hot 
  spirit 
  in 
  

   tufts 
  of 
  radiated 
  silky 
  yellow 
  needles. 
  From 
  its 
  analysis, 
  

  

  5*140 
  grains, 
  dried 
  in 
  vacuo, 
  gave 
  

  

  9 
  - 
  055 
  ... 
  carbonic 
  acid, 
  and 
  

  

  2-610 
  ... 
  water. 
  

  

  5-825 
  ... 
  dried 
  in 
  vacuo, 
  gave, 
  on 
  burning 
  with 
  soda 
  lime, 
  

  

  5-065 
  ... 
  platinum 
  salt 
  of 
  ammonia. 
  

  

  Calculation. 
  

  

  Carbon, 
  

  

  48-04 
  

  

  48-35 
  

  

  ^22 
  

  

  132 
  

  

  Hydrogen, 
  

  

  5-64 
  

  

  5-49 
  

  

  H 
  15 
  

  

  15 
  

  

  Oxygen, 
  

  

  

  41-04 
  

  

  ,4 
  

  

  112 
  

  

  Nitrogen, 
  

  

  5-46 
  

  

  5-12 
  

  

  N 
  

  

  14 
  

  

  100-00 
  100-00 
  273 
  

  

  Its 
  constitution 
  is 
  evidently 
  represented 
  by 
  the 
  formula, 
  

  

  NH 
  4 
  0,2C 
  4 
  H 
  5 
  0,C 
  14 
  HO 
  u 
  - 
  

   it 
  crystallises 
  without 
  water. 
  

  

  Biethylomeconate 
  of 
  ammonia 
  is 
  readily 
  soluble 
  in 
  cold 
  water 
  to 
  a 
  yellow 
  fluid 
  ; 
  

   acids 
  precipitate 
  from 
  this 
  the 
  unchanged 
  ether. 
  Its 
  aqueous 
  solution 
  gives 
  the 
  

   following 
  reactions 
  : 
  — 
  with 
  nitrate 
  of 
  silver 
  a 
  yellow 
  gelatinous 
  precipitate 
  in- 
  

   soluble 
  in 
  boiling 
  water, 
  and 
  apparently 
  unaltered 
  by 
  the 
  elevation 
  of 
  tempera- 
  

   ture 
  ; 
  with 
  sulphate 
  of 
  copper, 
  a 
  green 
  gelatinous 
  precipitate 
  ; 
  with 
  acetate 
  of 
  lead, 
  

   a 
  heavy 
  yellowish 
  white, 
  and, 
  with 
  sulphate 
  of 
  magnesia, 
  a 
  crystalline 
  precipi- 
  

   tate 
  ; 
  with 
  the 
  chlorides 
  of 
  barium, 
  strontium, 
  and 
  calcium, 
  it 
  produces 
  pale 
  yel- 
  

   low 
  semi-gelatinous 
  precipitates, 
  insoluble 
  in 
  boiling 
  water, 
  but 
  readily 
  soluble 
  in 
  

   excess 
  of 
  the 
  earthy 
  salts 
  ; 
  a 
  determination 
  of 
  the 
  base 
  in 
  the 
  baryta 
  salt 
  was 
  

   made, 
  

  

  f 
  5-533 
  grains, 
  dried 
  at 
  212°, 
  gave 
  

   \ 
  1-985 
  ... 
  sulphate 
  of 
  baryta. 
  

  

  Calculation. 
  

  

  Carbon, 
  . 
  . 
  ... 
  40-78 
  C 
  22 
  132 
  

  

  Hydrogen, 
  . 
  . 
  ... 
  3-39 
  H 
  n 
  11 
  

  

  Oxygen, 
  . 
  . 
  ... 
  32-15 
  13 
  104 
  

  

  Baryta, 
  . 
  . 
  23-54 
  23-68 
  BaO 
  76-64 
  

  

  100-00 
  100-00 
  323-64 
  

  

  which 
  leads 
  to 
  the 
  formula 
  for 
  biethylomeconate 
  of 
  baryta, 
  of 
  

  

  BaO, 
  2 
  C 
  4 
  H 
  5 
  0, 
  C 
  14 
  HO 
  u 
  . 
  

   I 
  believe, 
  from 
  an 
  experiment 
  made 
  on 
  a 
  small 
  scale, 
  that 
  biethylomeconic 
  

   acid, 
  when 
  heated 
  with 
  ammonia, 
  undergoes 
  a 
  change 
  ; 
  the 
  result 
  is 
  probably 
  an 
  

  

  