Industrial / Energy Fluids

XCELTHERM® SST

High operating temperature of 675°F (357°C) at low pressure; liquid phase heat transfer fluid for demanding applications. Recommended for chemical refining, oil and glycol recovery units, chemical processing, gas processing, petrochemical plants and many other applications.
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  • Typical Properties

    Key Operating Temperatures
    Maximum Bulk Fluid Operating Temperature 675ºF 357°C
    Maximum Film Temperature 725ºF 385°C
    Flash Point (PMCC)(ASTM D93) (min) 327°F 164°C
    Flash Point (COC) (ASTM D92) (min) 345°F 174°C
    Fire Point (ASTM D92) (min) 374°F 190°C
    Autoignition Temperature (min) 779°F 415°C
    Freezing/Melting Point -11.2°F  -24°C
    Pumpability, at 300 mm2/s (cSt)  14°F  -10°C
    Initial Boiling Point >536°F >280°C
    Physical Properties
    Composition Methylethylated aromatic mixture.
    Odor Mild
    Appearance Water-white, clear liquid
    Total Acid Number (ASTM D664)                                                     < 0.01mg KOH/g
    Moisture Content  (ASTM D6304) (ppm) (max) 200 ppm
    Specific Gravity @ 25°C/77°F (ASTM D1298) (typical and range) 0.96 0.91 -1.10
    Density, @ 25°C/77°F 7.98/lbs/gal
    Critical Temperature 908.3°F 468.8°C
    Critical Pressure 217.5 psia
    Critical Density 16.82 lb/ft3
    Kinematic Viscosity, at 40°C/104°F (ASTM D445) 11 cSt
    Kinematic Viscosity, at 100°C/212°F (ASTM D445) 2.4 cSt
    Coefficient of Thermal Expansion , at 200°C/392°F 0.00100/°C        0.000556/°F
    Heat of Vaporization, at Maximum Use Temperature 113.6 BTU/lb 264.2 kj/kg
    Average Molecular Weight 252 g/mol

  • Engineering Properties

    Temperature Viscosity Density Specific Heat Thermal Conductivity Vapor Pressure
    °F °C mm2/s cP lb/ft3 Kg/m3 BTU/lb-°F J/g-K BTU/ft-hr-°F W/m-K psia Kg/cm2
    50 10.0 48.0 46.364 60.3 965.9 0.4550 1.905 0.0665 0.1151 0.0000 0.0000
    60 15.6 33.0 31.679 59.9 960.0 0.4580 1.918 0.0662 0.1146 0.0000 0.0000
    70 21.1 24.0 22.897 59.6 954.0 0.4610 1.930 0.0659 0.1141 0.0000 0.0000
    80 26.7 17.8 16.876 59.2 948.1 0.4640 1.943 0.0656 0.1135 0.0000 0.0000
    90 32.2 14.5 13.662 58.8 942.2 0.4670 1.955 0.0653 0.1130 0.0000 0.0000
    100 37.8 11.9 11.141 58.4 936.2 0.4700 1.968 0.0650 0.1125 0.0000 0.0000
    110 43.3 9.60 8.931 58.1 930.3 0.4730 1.980 0.0647 0.1120 0.0000 0.0000
    120 48.9 7.90 7.303 57.7 924.4 0.4760 1.993 0.0644 0.1115 0.0000 0.0000
    130 54.4 6.70 6.154 57.3 918.4 0.4790 2.005 0.0641 0.1109 0.0001 0.0000
    140 60.0 5.75 5.247 57.0 912.5 0.4820 2.018 0.0638 0.1104 0.0001 0.0000
    150 65.6 5.00 4.533 56.6 906.6 0.4850 2.031 0.0635 0.1099 0.0001 0.0000
    160 71.1 4.30 3.873 56.2 900.6 0.4880 2.043 0.0632 0.1094 0.0002 0.0000
    170 76.7 3.80 3.400 55.9 894.7 0.4910 2.056 0.0629 0.1089 0.0002 0.0000
    180 82.2 3.40 3.022 55.5 888.8 0.4940 2.068 0.0626 0.1083 0.0003 0.0000
    190 87.8 3.03 2.675 55.1 882.8 0.4970 2.081 0.0623 0.1078 0.0004 0.0000
    200 93.3 2.71 2.376 54.7 876.9 0.5000 2.093 0.0620 0.1073 0.0006 0.0000
    210 98.9 2.45 2.134 54.4 871.0 0.5030 2.106 0.0617 0.1068 0.0008 0.0001
    220 104.4 2.23 1.929 54.0 865.0 0.5060 2.119 0.0614 0.1063 0.0012 0.0001
    230 110.0 2.02 1.735 53.6 859.1 0.5090 2.131 0.0611 0.1057 0.0016 0.0001
    240 115.6 1.84 1.570 53.3 853.2 0.5120 2.144 0.0608 0.1052 0.0023 0.0002
    250 121.1 1.67 1.415 52.9 847.2 0.5150 2.156 0.0605 0.1047 0.0032 0.0002
    260 126.7 1.55 1.304 52.5 841.3 0.5180 2.169 0.0602 0.1042 0.0045 0.0003
    270 132.2 1.45 1.211 52.1 835.3 0.5210 2.181 0.0599 0.1037 0.0063 0.0004
    280 137.8 1.37 1.136 51.8 829.4 0.5240 2.194 0.0596 0.1032 0.0088 0.0006
    290 143.3 1.30 1.071 51.4 823.5 0.5270 2.206 0.0593 0.1026 0.0124 0.0009
    300 148.9 1.23 1.006 51.0 817.5 0.5300 2.219 0.0590 0.1021 0.0173 0.0012
    310 154.4 1.17 0.950 50.7 811.6 0.5330 2.232 0.0587 0.1016 0.0243 0.0017
    320 160.0 1.11 0.894 50.3 805.7 0.5360 2.244 0.0584 0.1011 0.0341 0.0024
    330 165.6 1.05 0.840 49.9 799.7 0.5390 2.257 0.0581 0.1006 0.0478 0.0034
    340 171.1 1.000 0.794 49.6 793.8 0.5420 2.269 0.0578 0.1000 0.0671 0.0047
    350 176.7 0.960 0.756 49.2 787.9 0.5450 2.282 0.0575 0.0995 0.0941 0.0066
    360 182.2 0.920 0.719 48.8 781.9 0.5480 2.294 0.0572 0.0990 0.1320 0.0093
    370 187.8 0.880 0.683 48.4 776.0 0.5510 2.307 0.0569 0.0985 0.1851 0.0130
    380 193.3 0.840 0.647 48.1 770.1 0.5540 2.319 0.0566 0.0980 0.2597 0.0183
    390 198.9 0.810 0.619 47.7 764.1 0.5570 2.332 0.0563 0.0974 0.3642 0.0256
    400 204.4 0.780 0.591 47.3 758.2 0.5600 2.345 0.0560 0.0969 0.5108 0.0359
    410 210.0 0.745 0.560 47.0 752.3 0.5630 2.357 0.0557 0.0964 0.5926 0.0417
    420 215.6 0.710 0.530 46.6 746.3 0.5660 2.370 0.0554 0.0959 0.6954 0.0489
    430 221.1 0.680 0.503 46.2 740.4 0.5690 2.382 0.0551 0.0954 0.8160 0.0574
    440 226.7 0.660 0.485 45.9 734.5 0.5720 2.395 0.0548 0.0948 0.9576 0.0673
    450 232.2 0.640 0.466 45.5 728.5 0.5750 2.407 0.0545 0.0943 1.1238 0.0790
    460 237.8 0.620 0.448 45.1 722.6 0.5780 2.420 0.0542 0.0938 1.3188 0.0927
    470 243.3 0.600 0.430 44.7 716.6 0.5810 2.433 0.0539 0.0933 1.5476 0.1088
    480 248.9 0.580 0.412 44.4 710.7 0.5840 2.445 0.0536 0.0928 1.8161 0.1277
    490 254.4 0.560 0.395 44.0 704.8 0.5870 2.458 0.0533 0.0922 2.1313 0.1498
    500 260.0 0.540 0.377 43.6 698.8 0.5900 2.470 0.0530 0.0917 2.4796 0.1743
    510 265.6 0.520 0.360 43.3 692.9 0.5930 2.483 0.0527 0.0912 2.8223 0.1984
    520 271.1 0.505 0.347 42.9 687.0 0.5960 2.495 0.0524 0.0907 3.2123 0.2259
    530 276.7 0.490 0.334 42.5 681.0 0.5990 2.508 0.0521 0.0902 3.6562 0.2571
    540 282.2 0.475 0.321 42.1 675.1 0.6020 2.520 0.0518 0.0897 4.1615 0.2926
    550 287.8 0.460 0.308 41.8 669.2 0.6050 2.533 0.0515 0.0891 4.6430 0.3264
    560 293.3 0.450 0.298 41.4 663.2 0.6080 2.546 0.0512 0.0886 5.3259 0.3745
    570 298.9 0.439 0.289 41.0 657.3 0.6110 2.558 0.0509 0.0881 6.1092 0.4295
    580 304.4 0.423 0.276 40.7 651.4 0.6140 2.571 0.0506 0.0876 7.0078 0.4927
    590 310.0 0.413 0.267 40.3 645.4 0.6170 2.583 0.0503 0.0871 8.0385 0.5652
    600 315.6 0.407 0.260 39.9 639.5 0.6200 2.596 0.0500 0.0865 9.2209 0.6483
    610 321.1 0.395 0.250 39.6 633.6 0.6230 2.608 0.0497 0.0860 10.5771 0.7437
    620 326.7 0.390 0.245 39.2 627.6 0.6260 2.621 0.0494 0.0855 12.1328 0.8531
    630 332.2 0.385 0.239 38.8 621.7 0.6290 2.633 0.0491 0.0850 14.0405 0.9872
    640 337.8 0.380 0.234 38.4 615.8 0.6320 2.646 0.0488 0.0845 15.6383 1.0995
    650 343.3 0.375 0.229 38.1 609.8 0.6350 2.659 0.0485 0.0839 17.4179 1.2247
    660 348.9 0.350 0.211 37.7 603.9 0.6380 2.671 0.0482 0.0834 19.4001 1.3640
    670 354.4 0.345 0.206 37.3 597.9 0.6410 2.684 0.0479 0.0829 21.6078 1.5192
    680 360.0 0.340 0.201 37.0 592.0 0.6440 2.696 0.0476 0.0824 24.0668 1.6921
    690 365.6 0.335 0.196 36.6 586.1 0.6470 2.709 0.0473 0.0819 26.8056 1.8847
    700 371.1 0.330 0.191 36.2 580.1 0.6500 2.721 0.0470 0.0813 29.8560 2.0992
    * Data represents typical laboratory samples and are not guaranteed for all samples
    ** Enthalpy basis is liquid crystallizing point of 53.6ºF (12ºC)