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Apricus Solar Collector Installation & Operation Manual - USA
4.
4.1
TECHNICAL DATA
DOWFROST Fluid, Product Description
Composition, % by weight
Glycols
Inhibitors and water
Color
Specific gravity at
60/60°F
pH of solution
containing 50% glycol
Reserve alkalinity,
minimum
4.2
95.5
4.5
Colorless
1.050 - 1.060
9.5 - 10.5
10.6 ml
Typical Properties of Aqueous Solutions†
(Glycol percentage by volume)
Physical
Property
30% Glycol
Solution
40% Glycol
Solution
Thermal
40
Conductivity
180
Btu/(hr•ft2)(°F/ft) 250
0.247
0.279
0.279
0.225
0.249
0.248
0.204
0.221
0.219
0.184
0.195
0.192
Specific Heat,
Btu/(lb•°F)
40
180
250
0.909
0.961
0.986
0.872
0.934
0.965
0.830
0.902
0.937
0.782
0.864
0.905
Viscosity,
Centipoise
40
180
250
5.75
0.68
0.42
9.63
0.85
0.52
14.28
1.08
0.59
23.65
1.29
0.68
Density,
(1b/ft3)
40
180
250
64.67
61.92
59.82
65.21
62.22
59.99
65.67
62.45
60.11
66.05
62.61
60.18
†Typical
Temp.
°F
50% Glycol
Solution
60% Glycol
Solution
properties, not to be construed as specifications.
4.3 Freezing and Boiling Points of Aqueous Solutions
Freezing
Temperature, °F
26
19
8
-7
-28
-60
<-60
<-60
<-60
% Glycol
by Volume
10
20
30
40
50
60
70
80
90
Boiling
Temperature, °F
212
213
216
219
222
225
230
245
270
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
Copyright  2011 – Apricus Inc
Doc: A7-05.4.12-PB
Form No. 180-01272-402AMS
Page 24 of 129