Sodium Silicate (Na2Si2O5) Na2O5Si2(cr) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -26.430 -2455.459 -2455.459 INFINITE 100 66.906 42.058 279.416 -23.736 -2463.238 -2418.587 1263.340 200 124.081 107.976 177.452 -13.895 -2467.943 -2371.851 619.464 298.15 156.984 164.055 164.055 0. -2470.066 -2324.163 407.184 300 157.494 165.027 164.058 0.291 -2470.090 -2323.258 404.515 400 183.401 214.007 170.560 17.379 -2475.916 -2273.781 296.925 500 203.246 257.178 183.653 36.762 -2474.938 -2223.325 232.269 600 217.576 295.572 199.168 57.843 -2472.541 -2173.208 189.195 700 227.840 329.925 215.438 80.141 -2469.179 -2123.575 158.463 800 235.162 360.855 231.715 103.312 -2465.186 -2074.470 135.449 900 240.325 388.869 247.645 127.102 -2460.809 -2025.890 117.580 951.000 242.313 402.170 255.578 139.409 I <--> II 951.000 242.316 402.610 255.578 139.828 TRANSITION 980.000 243.275 409.903 260.037 146.869 II <--> III 980.000 292.880 410.544 260.037 147.497 TRANSITION 1000 292.880 416.461 263.107 153.354 -2454.208 -1977.854 103.312 1100 292.880 444.375 278.337 182.642 -2444.821 -1930.674 91.680 1147.000 292.880 456.629 285.393 196.408 III <--> LIQUID 1200 292.880 469.859 293.251 211.930 2629.223 1879.459 81.811 1300 292.880 493.302 307.750 241.218 -2618.531 -1817.413 73.025 1400 292.880 515.007 321.788 270.506 -2607.999 -1756.184 65.524 1500 292.880 535.213 335.351 299.794 -2597.620 -1695.704 59.050 1600 292.880 554.115 348.439 329.082 -2587.389 -1635.911 53.407 1700 292.880 571.871 361.065 358.370 -2677.658 -1575.859 48.420 1800 292.880 588.612 373.246 387.658 -2667.257 -1511.349 43.858 1900 292.880 604.447 385.002 416.946 -2656.916 -1447.414 39.792 2000 292.880 619.470 396.353 446.234 -2646.633 -1384.022 36.147