DOWTHERM™ SR-1 is a fluorescent pink, inhibited ethylene glycol–based heat transfer fluid for applications between −60°F and 250°F.
DOWTHERM™ SR-1 is an inhibited ethylene glycol–based heat transfer fluid for industrial thermal transfer processes. DOWTHERM™ SR-1 is the most commonly used thermal fluid and is widely recognized as the industry standard in numerous applications.
DOWTHERM™ SR-1 offers effective heat transfer over a broad operating temperature range from −60°F to 250°F (−51°C to 121°C). DOWTHERM™ SR-1 provides freeze protection to −60°F and burst protection to −100°F.
DOWTHERM™ SR-1 has been dyed a fluorescent pink-purple color for easy leak detection and identification.
DOWTHERM™ SR-1 is readily available in a broad range of prediluted blends:
DOWTHERM™ SR-1 25%
DOWTHERM™ SR-1 30%
DOWTHERM™ SR-1 35%
DOWTHERM™ SR-1 40%
DOWTHERM™ SR-1 45%
DOWTHERM™ SR-1 50%
DOWTHERM™ SR-1 60%
Color: Fluorescent pink
Ethylene glycol-based fluid, composition (% by weight): 95.4
Inhibitors & water, composition (% by weight): 4.6
Specific gravity (at 60/60°F): 1.122–1.132
pH of solution (50% glycol): 9.0–10.5
Reserve alkalinity (min): 12.0 mL
Primary Chemistry: Ethylene glycol
Ethylene glycol-based fluid (95%)
Fluorescent pink-purple for leak detection
Efficient heat transfer
Excellent corrosion protection
Extended fluid and equipment life
Reduced maintenance intervals
Broad operating range: −60°F to 250°F
Expensive or inefficient thermal fluids
Thermal fluid loss due to unidentified leaks
Pipe damage due to freezing or bursting
DOWTHERM™ SR-1 can be used in a wide variety of thermal transfer applications, including but not limited to the following:
Heating, ventilation, and air conditioning (HVAC)
Chill water and hydronic heating loops
Geothermal (ground source heat pumps)
Snow melt and turf heating systems
Solar hot water heating
Fire water sprinkler systems
Refrigeration
Ice skating rinks
Cooling and cold storage, refrigerated warehouses, and supermarkets
(secondary loop)
Thermal energy storage (TES)
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