﻿304: 
  8. 
  B. 
  Kuzirian 
  — 
  Action 
  of 
  Sodium 
  Paratungstate. 
  

  

  chlorine 
  of 
  the 
  chlorate 
  nor 
  the 
  bromine 
  of 
  the 
  bromate 
  was 
  

   expelled 
  under 
  the 
  analytical 
  conditions 
  within 
  a 
  reasonable 
  

   time 
  ; 
  while 
  a 
  five-minnte 
  fusion, 
  carried 
  out 
  with 
  extreme 
  

   care 
  to 
  avoid 
  mechanical 
  loss, 
  was 
  sufficient 
  to 
  effect 
  the 
  elim- 
  

   ination 
  of 
  iodine 
  from 
  the 
  iodate. 
  

  

  The 
  use 
  of 
  sodium 
  paratungstate 
  in 
  the 
  estimation 
  of 
  iodine 
  

   and 
  oxygen 
  in 
  iodates 
  is 
  shown 
  in 
  the 
  following 
  table 
  : 
  

  

  Analysis 
  of 
  C. 
  P. 
  Potassium 
  Iodate 
  of 
  Commerce 
  after 
  Drying. 
  

  

  

  KI0 
  3 
  Na 
  10 
  W 
  12 
  O 
  4i 
  

  

  i 
  Loss 
  on 
  

  

  Theory 
  

  

  

  

  taken 
  taken 
  

  

  ignition 
  

  

  for 
  loss 
  

  

  Error 
  

  

  No. 
  

  

  grm. 
  grm. 
  

  

  grm. 
  

  

  grm. 
  

  

  grm. 
  

  

  1 
  

  

  0-3000 
  2' 
  

  

  0-2335 
  

  

  0-2339 
  

  

  + 
  0-0004 
  

  

  2 
  

  

  0-3000 
  2- 
  

  

  0-2335 
  

  

  0-2339 
  

  

  + 
  00004 
  

  

  3 
  

  

  0-3000 
  2- 
  

  

  0*2330 
  

  

  0-2339 
  

  

  + 
  0-0009 
  

  

  4 
  

  

  0-3000 
  2- 
  

  

  0-2330 
  

  

  0-2339 
  

  

  + 
  0-0009 
  

  

  It 
  is 
  advantageous 
  to 
  heat 
  the 
  platinum 
  crucible 
  by 
  waving 
  

   under 
  it 
  a 
  small 
  flame, 
  thus 
  obviating 
  undue 
  violence 
  of 
  action. 
  

  

  