DOWTHERM™ SR-1| Inhibited Ethylene Glycol | Heat Transfer Fluid - 55 Gallon Drum

DOWTHERM™ SR-1| Inhibited Ethylene Glycol | Heat Transfer Fluid - 55 Gallon Drum

Product No. 118277

Package Type Metal Drum

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 down to -60°F and burst protection down to 100°F.

DOWTHERM™ SR-1 has been dyed a fluorescent pink/purple color for easy leak detection and identification.


Heating, Ventilation & Air Conditioning (HVAC)
Chill water & hydronic heating loops
Geothermal (ground source heat pumps)
Snow melt & Turf heating systems
Solar hot water heating
Fire water sprinkler systems
Ice skating rinks
Cold storage, refrigerated warehouses & supermarkets
(secondary loop)
Thermal Energy Storage (TES)



Heat Transfer Fluid

Facility Infrastructure

Heat Transfer Fluid

Maintenance, Repair, Overhaul

Heat Transfer Fluid


Water Treatment

Heat Transfer Fluid



More Information
SKU 118277
Availability In Stock
Weight (lbs) 496
Package Type Metal Drum
Color Pink
Odor Characteristic
pH 9.5 @ 50 % @ 20 °C (68 °F)
Freezing Point 19.4 °C (-2.9 °F)
Boiling Point 158 °C (316 °F) (1013 hPa)
Flash Point 126.7 °C (260.1 °F)
Evaporation Rate < 0.5
Lower Explosion Limit 3.2 %(V)
Vapor Pressure 2.2 mmHg
Density 9.9960 lb/gal
Viscosity, Kinematic 14 mm2/s

Prohibited Uses

This product may not be used in the applications or end markets listed below.

  • This product is only approved to be used as a heat transfer fluid for non-evaporative closed loop systems. It is not be used if there is the possibility of incidental contact to food and/or potable water.


Technical Documents
Safety Data Sheet