144 



ELECTRICAL CONDUCTIVITIES, ETC. 



Acid. 







25 to 35 c 



t> = 32 y=1024 d = 32 i y = 1024 



Phenylpropiolic ; 



Meconic ' 



Benzoic ! 



o-Chlorbenzoic j 



o-Nitrobenzoic 1 . 52 



?-Nitrobenzoic ! 



p-Nitrobenzoic ' 



1, 2, 4-Dinitrobenzoic 1 . 83 



1, 3, 5-Dinitrobenzoic 



Picric. ! 2.32 



Salicylic ! 



Acetylsalicylic ' 



Sulphosalicylic ! 2 . 36 



?n-Hydroxybenzoic : 



p-Hydroxybenzoic | 



1, 2, 4-Dihydroxybenzoic i 



1, 2, 5-Dihydroxybenzoic i 



Gallic ! 



o-Aminobenzoic 



m-Aminobenzoic i 



p-Aminobenzoic 



Metanilic 4 . 61 



Sulphanilic 4.03 



Picramic 



p-Sulphaminobenzoic ' 



Benzenesulphonic j 2.27 



?n-Nitrobenzenesulphonic | 2.28 



p-Toluenesulphonic ! 2 . 28 



1, 2, 4-Nitrotoluenesulphonic I 2.30 



o-Toluic 



m-Toluic 



p-Toluic ' 



Cinnamic i 



Hydrocinnamic | 2 . 47 



o-Phthalie ' 



4, 5-Dichlorphthalic i 



Tetrachlorphthalic 



Anisic i 



Vanillic |. 



Naphthionic 



Mandelic . 

 Camphoric. 

 Coumaric. . 



2.29 



2.32 

 2.36 

 2.64 

 1.97 

 2.22 

 2.69 

 2.63 

 2.31 

 2.60 

 2.41 

 2.91 

 2.04 

 2.49 

 2.71 

 2.72 

 2.87 

 2.79 

 2.76 

 4.03 

 5.11 

 3.57 

 2.30 

 3.57 

 4.30 

 2.52 

 2.37 

 2.31 

 2.34 

 2.37 

 2.11 

 2.62 

 2.76 

 2.96 

 2.49 

 2.37 

 2.14 

 2.11 

 2.74 

 2.63 

 3.30 

 2.30 

 2.20 

 3.07 



1.18 



0.59 



0.90 

 L3o' 



1.37 



02 

 68 



1.33 



1.40 

 1.45 

 1.34 



1.24 



1.31 



1.31 

 1.34 

 1.35 

 1.01 

 1.16 

 1.40 

 1.47 

 1.40 

 1.47 

 1.48 

 1.41 

 1.39 

 1.44 

 1.36 

 1.44 

 1.46 

 1.41 

 1.39 

 2.40 

 2.81 

 1.79 

 2.63 

 2.12 

 2.58 

 1.21 

 1.43 

 1.42 

 1.43 

 1.37 

 0.94 

 1.32 

 1.42 

 1.37 

 1.22 

 1.15 

 1.10 

 1.20 

 1.43 

 1.58 

 1.94 

 1.27 

 1.13 

 1.15 



50 to 65 



t; = 32 t;=1024 



0.63 



0.11 



0.40 



0.90 



0.83 



2.23 

 1.89 



0.92 

 0.92 

 0.92 



0.67 



0.71 



0.51 

 0.96 

 0.65 

 0.40 

 0.55 

 0.78 

 0.61 

 0.77 

 0.76 

 0.75 

 0.79 

 1.06 

 0.81 

 0.66 

 0.67 

 0.70 



0.76 



1.81 



52 

 .93 



0.67 

 0.98 

 0.90 

 0.S6 



0.40 

 0.65 

 0.70 

 0.77 

 0.61 

 0.81 

 0.59 

 0.56 

 0.82 

 0.75 

 1.19 

 0.72 

 0.56 

 0.70 



The temperature coefficients of conductivity, expressed in conductivity units, are, 

 for the same volume and temperature, of the same order of magnitude. Take v = 32, 

 and at these coefficients range in general from 2.2 to 2.7. There are a few com- 

 paratively wide discrepancies. Thus a=brombutyric, dibromsuccinic, o-nitroben- 

 zoic, and 1, 2, 4 dinitrobenzoic have percentage coefficients that are much lower than 

 2.2; while citric, coumaric, and especially metanilic and sulphanilic, have coeffi- 

 cients much larger than 2.7. That the relation pointed out above holds in general 

 will be seen from the results. It will also be noted that the temperature coefficients 

 in "per cent" decrease with rise in temperature. 



The results recorded in this monograph are for 200 of the most frequently used 

 salts and organic acids. Work along this same line is being continued in this labora- 

 tory. It is intended to include in this investigation a much larger number of salts, 

 organic acids, the strong mineral acids and bases, and the organic bases in water 

 and nonaqueous and mixed solvents. 



