Specifications
Thermal 40 0.247 0.225 0.204 0.184
Conductivity 180 0.279 0.249 0.221 0.195
Btu/(hr•ft
2
)(°F/ft) 250 0.279 0.248 0.219 0.192
Specific Heat, 40 0.909 0.872 0.830 0.782
Btu/(lb•°F) 180 0.961 0.934 0.902 0.864
250 0.986 0.965 0.937 0.905
Viscosity, 40 5.75 9.63 14.28 23.65
Centipoise 180 0.68 0.85 1.08 1.29
250 0.42 0.52 0.59 0.68
Density, 40 64.67 65.21 65.67 66.05
(1b/ft
3
) 180 61.92 62.22 62.45 62.61
250 59.82 59.99 60.11 60.18
4.3 Freezing and Boiling Points of Aqueous Solutions
Freezing % Glycol Boiling
Temperature, °F by Volume Temperature, °F
26 10 212
19 20 213
8 30 216
-7 40 219
-28 50 222
-60 60 225
<-60 70 230
<-60 80 245
<-60 90 270
4. TECHNICAL DATA
4.1 DOWFROST Fluid, Product Description
Composition, % by weight
Glycols 95.5
Inhibitors and water 4.5
Color Colorless
Specific gravity at
60/60°F 1.050 - 1.060
pH of solution
containing 50% glycol 9.5 - 10.5
Reserve alkalinity,
minimum 10.6 ml
4.2 Typical Properties of Aqueous Solutions
†
(Glycol percentage by volume)
Physical Temp. 30% Glycol 40% Glycol 50% Glycol 60% Glycol
Property °FSolutionSolutionSolutionSolution
†
Typical properties, not to be construed as specifications.
Form No. 180-01272-402AMS
For further information, call...
In The United States And Canada: 1-800-447-4369 • Fax 1-989-832-1465
In Europe: +32 3 450 2240 • Fax +32 3 450 2815
In The Pacific: +886-2-25478732 • Fax +886-2-27174115
In Other Global Areas: 1-989-832-1560 • Fax 1-989-832-1465
www.dowtherm.com
NOTICE: No freedom from any patent owned by Seller or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may
change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s
workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes no obligation or liability for the information in this
document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
Published April 2002.
*Trademark of The Dow Chemical Company
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