| 0 | 32 | 42 | 107.6 | 84 | 183.2 | 126 | 258.8 | | +1 | 33.8 | 43 | 109.4 | 85 | 185 | 127 | 260.6 | |_______|_______|_______|_______|_______|_______|_______|_______| (From _Soaps_, by G. H. Hurst, published by Scott, Greenwood & Son.) 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 |