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  DOWTHERM™ SR-1   Product Data Page 1
Product Data Page 1 Product Data Page 2Purchase

Inhibited Ethylene Glycol-based Heat Transfer Fluid     Click here for Pricing and Purchase


Click Here to Download Product Information Sheet in PDF Format

DOWTHERM SR-1 * heat transfer fluid
is a formulation of 95.5 weight percent
ethylene glycol and a specially designed
package of industrial corrosion
inhibitors. The fluid is dyed fluorescent
pink for leak detection purposes.
Solutions in water provide freeze
protection to below -50°C (-60°F) and
burst protection to below -73°C (-100°F).
Recommended use temperature range:
-50°C (-60°F) to 120°C (250°F).
Suitable applications: closed-loop,
water-based HVAC, process heating
and cooling, food industry applications
within temperature range
For health and safety information for
this product, contact your Dow sales
representative or call the number for
your area on the second page of this
sheet for a Material Safety Data Sheet
(MSDS).

chemical.net Dowtherm

7360 Milnor St.
Philadelphia, PA 19136		 (888) 243- 6425
Fax: (215) 333-2218
Typical Concentrations of DOWTHERM SR-1 * Fluid Required to Provide Freeze and Burst Protection at Various Temperatures
Percent DOWTHERM SR-1 Fluid
Concentration Required
 
Temp C° Temp F° For Freeze Protection Volume % For Burst Protection Volume %
-7
-12
-18		 20
10
0		 16.8
26.2
34.6		 11.5
17.8
23.1
-23
-29
-34		 -10
-20
-30		 40.9
46.1
50.3		 27.3
31.4
31.4
-40
-46
-51		 -40
-50
-60		 54.5
58.7
62.9		 31.4
31.4
31.4
NOTE: These figures are examples only and may not be appropriate to your situation. Generally,
for an extended margin of protection, you should select a temperature in this table that is at least
3°C (5°F) lower than the expected lowest ambient temperature. Inhibitor levels should be adjusted
for solutions of less than 30% glycol. Contact Dow for information on specific cases or further
assistance.
ATTENTION: These are typical numbers only and are not to be regarded as specifications. As use
conditions are not within its control, Dow does not guarantee results from use of the information
or products herein; and gives no warranty, express or implied.
   


Typical Freezing and Boiling Points of DOWTHERM SR-1 Fluid†
 

Wt. % Ethylene
Glycol		 Vol. % Ethylene
Glycol		 Wt. %
DOWTHERM SR-1		 Vol. %
DOWTHERM SR-1		 Freezing Point
°C (°F)		 Boiling Point
°C @ 101 kPa
(°F @ 760 mmHG)		 Degree
Brix††		 Refractive Index 22°C (72°F)
0.0
5.0
10.0
15.0
20.0		 0.0
4.4
8.9
13.6
18.1		 0.0
5.2
10.5
15.7
20.9		 0.0
4.6
9.3
14.2
19.0		 0     (32.0)
-1.4 (29.4)
-3.2 (26.2)
-5.4 (22.2)
-7.8 (17.9)		 100.0 (212)
100.6 (213)
101.1 (214)
101.7 (215)
102.2 (216)		 0.0
3.8
6.8
9.9
13.0		 1.3328
1.3378
1.3428
1.3478
1.3530
25.0
30.0
35.0
40.0
45.0		 22.9
27.7
32.6
37.5
42.5		 26.2
31.4
36.6
41.9
47.1		 24.0
29.0
34.1
39.3
44.5		 -10.7 (12.7)
-14.1 (6.7)
-17.9 (-0.2)
-22.3 (-8.1)
-27.5 (-17.5)		 103.3 (218)
104.4 (220)
105.0 (221)
105.6 (222)
106.7 (224)		 16.1
19.2
22.3
25.3
28.3		 1.3582
1.3635
1.3688
1.3741
1.3796
50.0
55.0
60.0
65.0
70.0		 47.6
52.7
57.8
62.8
68.3		 52.4
57.6
62.8
68.0
73.3		 49.8
55.2
60.5
65.8
71.5		 -33.8 (-28.9)
-41.1 (-42.0)
-48.3 (-54.9)
a
a		 107.2 (225)
108.3 (227)
110.0 (230)
112.8 (235)
116.7 (242)		 31.2
33.9
36.6
39.1
41.7		 1.3849
1.3900
1.3952
1.4003
1.4055
75.0
80.0
85.0
90.0
95.0		 73.6
78.9
84.3
89.7
95.0		 78.5
83.8
89.0
94.2
99.5		 77.1
82.6
88.3
93.9
99.5		 a
-46.8 (-52.2)
-36.9 (-34.5)
-29.8 (-21.6)
-19.4 (-3.0)		 120.0 (248)
123.9 (255)
133.9 (273)
140.6 (285)
158.3 (317)		 44.2
46.6
49.0
51.2
53.2		 1.4107
1.4159
1.4208
1.4255
1.4300

*Trademark of The Dow Chemical Company
† Typical properties, not to be construed as specifications.
†† Degree Brix is a measure of the sugar concentration in a fluid and is important in fermentation and syrups applications. Although there is no sugar present
in DOWTHERM heat transfer fluids, the glycol affects the refractive index of the fluid in a similar fashion.
a Freezing points are below -50°C (-60°F).
NOTE: Generally, for an extended margin of protection, you should select a temperature in this table that is at least 3°C (5°F) lower than the expected lowest ambient
temperature. Inhibitor levels should be adjusted for solutions of less than 30% glycol. Contact Dow for information on specific cases or further assistance.
*Trademark of The Dow Chemical Company

Product Data Page 1 Product Data Page 2
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Copyright © The Dow Chemical Company (1995-2009). All Rights Reserved.
®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow