﻿64 
  

  

  Mr. 
  Gervaise 
  Le 
  Bas 
  on 
  

  

  Table 
  II. 
  

   Table 
  o£ 
  Constants. 
  

  

  define, 
  C 
  ;i 
  H 
  2n 
  | 
  =!. 
  

  

  W. 
  

  

  M.W. 
  

  

  M.P. 
  

  

  (abs.). 
  

  

  d 
  T 
  '. 
  

  

  a. 
  

  

  /3. 
  

  

  Dodecylene, 
  C 
  12 
  H 
  24 
  I 
  = 
  I 
  ... 
  

  

  72 
  

  

  168 
  

  

  242° 
  

  

  •7954 
  

  

  -•0008997 
  

  

  -•00000022 
  

  

  Tetradecylene, 
  C 
  x 
  Jl 
  28 
  |= 
  | 
  ... 
  

  

  84 
  

  

  196 
  

  

  261° 
  

  

  •7936 
  

  

  -•0003869 
  

  

  -•00000017 
  

  

  Hexadeeylene, 
  C 
  1G 
  H 
  32 
  ]==] 
  ... 
  

  

  96 
  

  

  224 
  

  

  277° 
  

  

  •7917 
  

  

  -•0008556 
  

  

  -•00000040 
  

  

  Octadecylene, 
  C 
  18 
  H 
  36 
  1=] 
  ... 
  

  

  108 
  

  

  252 
  

  

  291° 
  

  

  •7910 
  

  

  -•000872 
  

  

  

  The 
  method 
  which 
  is 
  adopted 
  for 
  calculating 
  the 
  amount 
  of 
  

   the 
  contraction 
  is 
  expressed 
  by 
  the 
  following 
  formula 
  : 
  — 
  

  

  M.Y. 
  of 
  C 
  n 
  H 
  22i+2 
  -M.V. 
  of 
  OAJH 
  = 
  A 
  for 
  H 
  2 
  + 
  f=|, 
  

  

  j 
  = 
  | 
  = 
  -A 
  + 
  Vol.o£ 
  H 
  2 
  . 
  

  

  The 
  apparent 
  volume 
  of 
  H 
  at 
  corresponding 
  temperatures^ 
  

   that 
  is, 
  those 
  which 
  are 
  equidistant 
  from 
  the 
  respective 
  

   melting-points, 
  are 
  given 
  in 
  the 
  tables 
  of 
  results 
  for 
  the 
  

   normal 
  paraffins. 
  Column 
  4 
  gives 
  V 
  the 
  molecular 
  volumes 
  

   of 
  the 
  olefines 
  at 
  the 
  different 
  temperatures, 
  and 
  column 
  5 
  the 
  

   volumes 
  V 
  for 
  the 
  corresponding 
  normal 
  paraffins. 
  

  

  Table 
  III. 
  

   Dodecylene, 
  C 
  12 
  H 
  24 
  |=). 
  M.W. 
  168. 
  W. 
  72. 
  M.P. 
  -31°. 
  

   d 
  T 
  = 
  -7954{l--0008997*-00000022* 
  2 
  }. 
  

  

  t, 
  Calc. 
  sp. 
  gr. 
  Observed 
  sp. 
  gr. 
  

  

  -31°. 
  

  

  ± 
  , 
  

  

  + 
  15 
  . 
  

   4-30 
  . 
  

  

  •7731 
  

  

  '7621 
  

   7511 
  

  

  •7954 
  

   •7729 
  \ 
  

   •7732/ 
  

   •7620 
  

   •7511 
  

  

  

  

  d 
  T 
  

  

  

  

  

  

  

  T. 
  

  

  d. 
  

  

  <!, 
  v 
  , 
  

  

  V. 
  

  

  V. 
  

  

  A. 
  

  

  H 
  2 
  . 
  

  

  1=1. 
  

  

  242 
  

  

  •7954 
  

  

  1-0000 
  

  

  211-21 
  

  

  21993 
  

  

  -8-72 
  

  

  5-94 
  

  

  -2-78 
  

  

  252 
  

  

  •7882 
  

  

  09910 
  

  

  2i:;-u 
  

  

  221-84 
  

  

  -8-70 
  

  

  600 
  

  

  -2-70 
  

  

  262 
  

  

  •7810 
  

  

  0-9819 
  

  

  21511 
  

  

  223-86 
  

  

  -8-75 
  

  

  605 
  

  

  -2-70 
  

  

  272 
  

  

  •7739 
  

  

  09730 
  

  

  21708 
  

  

  225-91 
  

  

  -8-83 
  

  

  6-10 
  

  

  -2*73 
  

  

  282 
  

  

  •vein 
  

  

  0-9636 
  

  

  21921 
  

  

  22806 
  

  

  -8-85 
  

  

  615 
  

  

  -270 
  

  

  292 
  

  

  •7592 
  

  

  0-9544 
  

  

  221*29 
  

  

  230-28 
  

  

  -S-91 
  

  

  6-22 
  

  

  -2-72 
  

  

  302 
  

  

  •7518 
  

  

  0*9462 
  

  

  22345 
  

  

  232 
  19 
  

  

  -904 
  

  

  6-28 
  

  

  -2-70 
  

  

  812 
  

  

  •7445 
  

  

  0-9360 
  

  

  225-67 
  

  

  234*77 
  

  

  -910 
  

  

  634 
  

  

  -273 
  

  

  

  

  

  

  Me 
  m 
  oontractioi 
  

  

  = 
  

  

  -2-73 
  

  

  