Sodium Borate (Na2B4O7) B4Na2O7(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -30.382 -3258.983 -3258.983 INFINITE 100 76.525 50.814 321.976 -27.116 -3268.658 -3208.196 1675.790 200 139.746 124.566 205.130 -16.113 -3274.087 -3145.347 821.480 298.15 186.774 189.490 189.490 0. -3276.741 -3081.522 539.870 300 187.447 190.648 189.494 0.346 -3276.774 -3080.310 536.330 400 213.802 248.460 197.196 20.505 -3283.707 -3014.160 393.609 500 228.534 297.784 212.510 42.637 -3285.408 -2946.574 307.826 600 241.500 340.624 230.368 66.154 -3286.907 -2878.661 250.610 700 252.697 378.715 248.889 90.878 -3288.098 -2810.522 209.724 800 262.128 413.077 267.299 116.622 -3288.983 -2742.233 179.049 900 271.215 444.482 285.266 143.294 -3289.531 -2673.853 155.186 1000 279.700 473.502 302.657 170.845 -3289.721 -2605.430 136.094 1015.600 280.970 477.841 305.314 175.218 CRYSTAL <--> LIQUID 1015.600 444.885 553.544 305.314 252.102 TRANSITION 1100 444.885 589.060 325.741 289.651 -3199.134 -2543.946 120.802 1200 444.885 627.770 349.320 334.139 -3376.842 -2480.206 107.961 1300 444.885 663.379 372.127 378.628 -3359.618 -2406.187 96.682 1400 444.893 696.349 394.123 423.117 -3342.693 -2333.483 87.063 1500 444.885 727.043 415.306 467.605 -3326.043 -2261.980 78.769 1600 444.885 755.756 435.697 512.094 -3309.652 -2191.578 71.548 1700 444.885 782.727 455.325 556.582 -3293.507 -2122.194 65.207 1800 444.885 808.156 474.227 601.071 -3277.601 -2053.754 59.598 1900 444.885 832.209 492.441 645.559 -3261.925 -1986.191 54.604 2000 444.885 855.029 510.005 690.048 -3246.476 -1919.447 50.131 2100 444.885 876.735 526.956 734.536 -3231.249 -1853.471 46.103 2200 444.885 897.431 543.329 779.025 -3216.242 -1788.213 42.458 2300 444.885 917.207 559.158 823.513 -3201.453 -1723.636 39.145 2400 444.885 936.141 574.473 868.002 -3387.917 -1655.422 36.029 2500 444.885 954.302 589.306 912.490 -3373.871 -1583.524 33.086 2600 444.885 971.751 603.682 956.979 -3359.909 -1512.186 30.380 2700 444.885 988.541 617.627 1001.467 -3346.032 -1441.382 27.885 2800 444.885 1004.720 631.165 1045.956 -3332.239 -1371.091 25.578 2900 444.885 1020.332 644.317 1090.444 -3318.531 -1301.295 23.439 3000 444.885 1035.414 657.103 1134.933 -3304.910 -1231.967 21.450