Chapter XV: Appendix: C

TABLE OF THE SPECIFIC GRAVITIES OF SOLUTIONS OF CAUSTIC SODA.

_________________________________________________________________________ | | | | | | | | Per cent. by | Lb. of actual NaOH contained | | | | weight of | in 1 gallon of lye made from | | | | | commercial caustic of | | Degrees | Specific |___________________|______________________________| | Twaddell. | gravity. | | | | | | | | | Na_{2}O. | NaOH. | 77 per | 74 per | 70 per | | | | | | cent. | cent. | cent. | |___________|__________|__________|________|_________|_________|__________| | | | | | | | | | 1 | 1.005 | 0.368 | 0.474 | 0.048 | 0.046 | 0.043 | | 2 | 1.010 | 0.742 | 0.957 | 0.097 | 0.092 | 0.087 | | 3 | 1.015 | 1.114 | 1.436 | 0.146 | 0.131 | 0.129 | | 4 | 1.020 | 1.480 | 1.909 | 0.194 | 0.185 | 0.180 | | 5 | 1.025 | 1.834 | 2.365 | 0.243 | 0.231 | 0.219 | | 6 | 1.030 | 2.194 | 2.830 | 0.291 | 0.278 | 0.262 | | 7 | 1.035 | 2.521 | 3.252 | 0.335 | 0.320 | 0.303 | | 8 | 1.040 | 2.964 | 3.746 | 0.389 | 0.371 | 0.350 | | 9 | 1.045 | 3.244 | 4.184 | 0.438 | 0.417 | 0.393 | | 10 | 1.050 | 3.590 | 4.631 | 0.486 | 0.461 | 0.438 | | 11 | 1.055 | 3.943 | 5.086 | 0.536 | 0.510 | 0.483 | | 12 | 1.060 | 4.292 | 5.536 | 0.586 | 0.558 | 0.528 | | 13 | 1.065 | 4.638 | 5.982 | 0.636 | 0.607 | 0.573 | | 14 | 1.070 | 4.972 | 6.413 | 0.680 | 0.653 | 0.617 | | 15 | 1.075 | 5.311 | 6.911 | 0.742 | 0.707 | 0.668 | | 16 | 1.080 | 5.648 | 7.285 | 0.786 | 0.749 | 0.709 | | 17 | 1.085 | 5.981 | 7.715 | 0.836 | 0.798 | 0.755 | | 18 | 1.090 | 6.311 | 8.140 | 0.886 | 0.845 | 0.800 | | 19 | 1.095 | 6.639 | 8.564 | 0.937 | 0.894 | 0.846 | | 20 | 1.100 | 6.954 | 8.970 | 0.986 | 0.941 | 0.890 | | 21 | 1.105 | 7.276 | 9.386 | 1.037 | 0.989 | 0.938 | | 22 | 1.110 | 7.594 | 9.796 | 1.087 | 1.037 | 0.981 | | 23 | 1.115 | 7.910 | 10.203 | 1.137 | 1.123 | 1.026 | | 24 | 1.120 | 8.223 | 10.607 | 1.187 | 1.175 | 1.071 | | 25 | 1.125 | 8.583 | 11.107 | 1.238 | 1.181 | 1.117 | | 26 | 1.130 | 8.893 | 11.471 | 1.296 | 1.237 | 1.170 | | 27 | 1.135 | 9.251 | 11.933 | 1.354 | 1.292 | 1.122 | | 28 | 1.140 | 9.614 | 12.401 | 1.413 | 1.350 | 1.277 | | 29 | 1.145 | 9.965 | 12.844 | 1.470 | 1.413 | 1.337 | | 30 | 1.150 | 10.313 | 13.303 | 1.529 | 1.460 | 1.381 | | 31 | 1.155 | 10.666 | 13.859 | 1.600 | 1.528 | 1.445 | | 32 | 1.160 | 11.008 | 14.190 | 1.646 | 1.541 | 1.456 | | 33 | 1.165 | 11.347 | 14.637 | 1.705 | 1.627 | 1.539 | | 34 | 1.170 | 11.691 | 15.081 | 1.764 | 1.684 | 1.593 | | 35 | 1.175 | 12.025 | 15.512 | 1.822 | 1.739 | 1.645 | | 36 | 1.180 | 12.356 | 16.139 | 1.904 | 1.817 | 1.719 | | 37 | 1.185 | 12.692 | 16.372 | 1.942 | 1.853 | 1.753 | | 38 | 1.190 | 13.016 | 16.794 | 1.998 | 1.887 | 1.804 | | 39 | 1.195 | 13.339 | 17.203 | 2.055 | 1.962 | 1.856 | | 40 | 1.200 | 13.660 | 17.629 | 2.122 | 2.026 | 1.916 | | 41 | 1.205 | 14.058 | 18.133 | 2.185 | 2.085 | 1.973 | | 42 | 1.210 | 14.438 | 18.618 | 2.252 | 2.147 | 2.033 | | 43 | 1.215 | 14.823 | 19.121 | 2.323 | 2.221 | 2.097 | | 44 | 1.220 | 15.124 | 19.613 | 2.392 | 2.280 | 2.161 | | 45 | 1.225 | 15.502 | 19.997 | 2.444 | 2.338 | 2.206 | | 46 | 1.230 | 15.959 | 20.586 | 2.562 | 2.417 | 2.285 | | 47 | 1.235 | 16.299 | 20.996 | 2.593 | 2.475 | 2.341 | | 48 | 1.240 | 16.692 | 21.532 | 2.669 | 2.548 | 2.410 | |___________|__________|__________|________|_________|_________|__________|

_________________________________________________________________________ | | | | | | | | Per cent. by | Lb. of actual NaOH contained | | | | weight of | in 1 gallon of lye made from | | | | | commercial caustic of | | Degrees | Specific |___________________|______________________________| | Twaddell. | gravity. | | | | | | | | | Na_{2}O. | NaOH. | 77 per | 74 per | 70 per | | | | | | cent. | cent. | cent. | |___________|__________|__________|________|_________|_________|__________| | | | | | | | | | 49 | 1.245 | 17.060 | 22.008 | 2.739 | 2.615 | 2.474 | | 50 | 1.250 | 17.424 | 22.476 | 2.809 | 2.681 | 2.536 | | 51 | 1.255 | 17.800 | 22.962 | 2.881 | 2.750 | 2.602 | | 52 | 1.260 | 18.166 | 23.433 | 2.952 | 2.818 | 2.666 | | 53 | 1.265 | 18.529 | 23.901 | 3.020 | 2.886 | 2.730 | | 54 | 1.270 | 18.897 | 24.376 | 3.095 | 2.955 | 2.795 | | 55 | 1.275 | 19.255 | 24.858 | 3.171 | 3.027 | 2.863 | | 56 | 1.280 | 19.609 | 25.295 | 3.237 | 3.090 | 2.932 | | 57 | 1.285 | 19.961 | 25.750 | 3.308 | 3.158 | 2.988 | | 58 | 1.290 | 20.318 | 26.210 | 3.381 | 3.227 | 3.053 | | 59 | 1.295 | 20.655 | 26.658 | 3.452 | 3.364 | 3.117 | | 60 | 1.300 | 21.156 | 27.110 | 3.524 | 3.394 | 3.182 | | 61 | 1.305 | 21.405 | 27.611 | 3.603 | 3.439 | 3.253 | | 62 | 1.310 | 21.785 | 28.105 | 3.682 | 3.514 | 3.224 | | 63 | 1.315 | 22.168 | 28.595 | 3.760 | 3.593 | 3.395 | | 64 | 1.320 | 22.556 | 29.161 | 3.849 | 3.674 | 3.475 | | 65 | 1.325 | 22.926 | 29.574 | 3.919 | 3.742 | 3.539 | | 66 | 1.330 | 23.310 | 30.058 | 3.997 | 3.816 | 3.610 | | 67 | 1.335 | 23.670 | 30.535 | 4.072 | 3.891 | 3.681 | | 68 | 1.340 | 24.046 | 31.018 | 4.156 | 3.967 | 3.754 | | 69 | 1.345 | 24.410 | 31.490 | 4.232 | 4.042 | 3.824 | | 70 | 1.350 | 24.765 | 31.948 | 4.312 | 4.116 | 3.894 | | 71 | 1.355 | 25.152 | 32.446 | 4.396 | 4.196 | 3.970 | | 72 | 1.360 | 25.526 | 32.930 | 4.478 | 4.274 | 4.043 | | 73 | 1.365 | 25.901 | 33.415 | 4.561 | 4.354 | 4.109 | | 74 | 1.370 | 26.285 | 33.905 | 4.645 | 4.434 | 4.194 | | 75 | 1.375 | 26.650 | 34.382 | 4.728 | 4.513 | 4.269 | | 76 | 1.380 | 27.021 | 34.855 | 4.810 | 4.592 | 4.344 | | 77 | 1.385 | 27.385 | 35.328 | 4.893 | 4.670 | 4.418 | | 78 | 1.390 | 27.745 | 35.795 | 4.975 | 4.794 | 4.493 | | 79 | 1.395 | 28.110 | 36.258 | 5.058 | 4.828 | 4.567 | | 80 | 1.400 | 28.465 | 36.720 | 5.141 | 4.907 | 4.642 | | 81 | 1.405 | 28.836 | 37.203 | 5.227 | 4.989 | 4.720 | | 82 | 1.410 | 29.203 | 37.674 | 5.312 | 5.071 | 4.797 | | 83 | 1.415 | 29.570 | 38.146 | 5.397 | 5.135 | 4.873 | | 84 | 1.420 | 29.930 | 38.610 | 5.482 | 5.233 | 4.950 | | 85 | 1.425 | 30.285 | 39.071 | 5.567 | 5.314 | 5.027 | | 86 | 1.430 | 30.645 | 39.530 | 5.653 | 5.396 | 5.104 | | 87 | 1.435 | 30.995 | 39.986 | 5.738 | 5.467 | 5.181 | | 88 | 1.440 | 31.349 | 40.435 | 5.823 | 5.558 | 5.258 | | 89 | 1.445 | 31.700 | 40.882 | 5.908 | 5.640 | 5.335 | | 90 | 1.450 | 32.043 | 41.335 | 5.923 | 5.721 | 5.412 | | 91 | 1.455 | 32.460 | 41.875 | 6.093 | 5.816 | 5.502 | | 92 | 1.460 | 32.870 | 42.400 | 6.191 | 5.909 | 5.608 | | 93 | 1.465 | 33.283 | 42.935 | 6.290 | 6.004 | 5.679 | | 94 | 1.470 | 33.695 | 43.467 | 6.389 | 6.009 | 5.769 | | 95 | 1.475 | 34.092 | 43.980 | 6.487 | 6.193 | 5.856 | | 96 | 1.480 | 34.500 | 44.505 | 6.586 | 6.287 | 5.948 | | 97 | 1.485 | 34.899 | 45.013 | 6.685 | 6.381 | 6.035 | | 98 | 1.490 | 35.245 | 45.530 | 6.784 | 6.476 | 6.126 | | 99 | 1.495 | 35.691 | 46.041 | 6.884 | 6.571 | 6.216 | | 100 | 1.500 | 36.081 | 46.545 | 6.982 | 6.665 | 6.303 | |___________|__________|__________|________|_________|_________|__________|

(From _Soaps_, by G. H. Hurst, published by Scott, Greenwood & Son.)