DOWFROST Heat Transfer Fluid: Dowfrost, Not Food Safe, 25% Concentration, Yellow

Technical Data Sheet DOWFROST™ LC Heat Transfer Fluid Product Type Inhibited propylene glycol-based heat transfer fluid. Application Heat management and corrosion protection in datacenter direct-to-chip liquid cooling applications. Recommended 0°F1(-20°C) to 195°F (90°C) 1Lowest operating temperature is normally considered ~0°F (-20°C) due to the viscosity Use Temperature increase at this temperature. Freeze protection down to 14°F (-10°C) can be achieved Range using DOWFROST™ LC 25 Heat Transfer Fluid or down to -40°F (-40°C) using DOWFROST™ LC 55 Heat Transfer Fluid. Description With continual advancements of micro-processor technology, leading to increasingly higher heat loads, DOWFROST™ LC Heat Transfer Fluid is the optimal fluid for efficient heat removal in Datacom Equipment Cooling Systems (DECS). With a customized inhibitor package, DOWFROST™ LC Heat Transfer Fluid provides superior corrosion protection for liquid cooled, direct-to-chip applications with high surface area copper components. Typical Product Specifications1 of DOWFROST™ LC Heat Transfer Fluids Fluid Parameter Units DOWFROST™ LC 25 Heat DOWFROST™ LC 55 Heat Transfer Fluid Transfer Fluid (PG25) (PG55) Propylene Glycol Concentration Volume % 25 55 Freezing Point °F 14 -40 °C -10 -40 pH 8.0–10.5 8.0–10.5 Reserve Alkalinity mL 0.1N HCl > 6.0 > 6.0 Thermal Conductivity W/mK at 50°C 0.485 0.336 Specific Heat kJ/kg-K at 50°C 3.94 3.43 Viscosity mPa sec at 20°C 2.8 8.8 mPa sec at 50°C 1.3 2.9 Volume Expansion % from -40 to 90°C 5.2 7.7 Boiling Point °C at 760 mmHg 101.4 105 Electrical Conductivity micromho/cm > 2,000 > 2,000 1. Typical properties, not the be construed as specifications. ®TM Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Page 1 of 4 DOWFROST™ LC Heat Transfer Fluid Form No. 180-01627-01-0523 S2D Freezing Point1 of DOWFROST™ LC Heat Transfer Fluid based on Glycol Concentration and Refractive Index1 The propylene glycol concentration and, therefore, freezing point can be determined by measuring refractive index and consulting the table below. DOWFROST™ LC 25 Heat Transfer Fluid contains 25% propylene glycol, by volume, while DOWFROST™ LC 55 Heat Transfer Fluid contains 55% propylene glycol, by volume. Fluids should be used as-is and not further diluted. Freezing Point Propylene Glycol Refractive Index °F °C Weight % Volume % 20°C 25°C 15.6 -9.1 24.0 23.5 1.3622 1.3613 14.7 -9.6 25.0 24.5 1.3634 1.3625 13.7 -10.2 26.0 25.5 1.3646 1.3637 12.6 -10.8 27.0 26.5 1.3658 1.3649 11.5 -11.4 28.0 27.5 1.3670 1.3661 Freezing Point Propylene Glycol Refractive Index °F °C Weight % Volume % 20°C 25°C -36.7 -38.2 53.0 52.8 1.3949 1.3936 -39.7 -39.8 54.0 53.8 1.3960 1.3947 -42.8 -41.6 55.0 54.8 1.3971 1.3957 -46 -43.3 56.0 55.9 1.3982 1.3968 -49.3 -45.2 57.0 56.9 1.3993 1.3979 1. Typical properties, not the be construed as specifications. Physical Properties1 of DOWFROST™ LC 25 Heat Transfer Fluid Temperature Density Specific Heat Thermal Viscosity Vapor Pressure °C kg/m3 kJ/kg K Conductivity mPa sec kPa W/mK -5 1041.9 3.81 0.425 7.80 0.004 0 1040.5 3.82 0.432 6.32 0.006 5 1038.8 3.83 0.438 5.13 0.009 10 1036.9 3.84 0.444 4.17 0.012 15 1034.9 3.85 0.450 3.42 0.017 20 1032.7 3.87 0.456 2.84 0.023 25 1030.3 3.88 0.462 2.39 0.031 30 1027.8 3.89 0.467 2.05 0.042 35 1025.2 3.90 0.472 1.78 0.055 40 1022.5 3.92 0.476 1.58 0.072 45 1019.7 3.93 0.481 1.41 0.093 1. Typical properties, not the be construed as specifications. ®TM Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow Page 2 of 4 DOWFROST™ LC Heat Transfer Fluid Form No. 180-01627-01-0523 S2D Physical Properties of DOWFROST™ LC 25 Heat Transfer Fluid (Cont.) Temperature Density Specific Heat Thermal Viscosity Vapor Pressure °C kg/m3 kJ/kg K Conductivity mPa sec kPa W/mK 50 1016.8 3.94 0.485 1.27 0.119 55 1013.7 3.95 0.488 1.15 0.152 60 1010.6 3.97 0.492 1.04 0.191 65 1007.3 3.98 0.495 0.93 0.239 70 1003.9 3.99 0.497 0.83 0.297 75 1000.4 4.00 0.500 0.75 0.367 80 996.7 4.01 0.502 0.69 0.450 Physical Properties1 of DOWFROST™ LC 55 Heat Transfer Fluid Temperature Density Specific Heat Thermal Viscosity Vapor Pressure °C kg/m3 kJ/kg K Conductivity mPa sec kPa W/mK -40 1085.9 2.98 0.280 1413.58 -35 1083.9 3.01 0.283 703.58 -30 1081.9 3.03 0.287 376.40 -25 1079.8 3.06 0.291 214.54 0.001 -20 1077.5 3.08 0.294 129.29 0.001 -15 1075.1 3.11 0.298 81.85 0.002 -10 1072.7 3.13 0.302 54.11 0.002 -5 1070.1 3.16 0.305 37.18 0.004 0 1067.4 3.18 0.309…