Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow DOWTHERM SR-1 Ethylene Glycol Antifreeze

Dow DOWTHERM SR-1 Ethylene Glycol Antifreeze is a premium inhibited glycol-based heat-transfer fluid engineered for closed-loop HVAC and industrial systems. It offers exceptional corrosion protection, thermal stability up to 135°C, and low-temperature performance to −37°C. Formulated with Dow’s proprietary inhibitor package, it extends system life and maintains efficiency. Compatible with common metals and elastomers, it meets ASTM D3306 and ASHRAE standards. Pre-mixed or concentrate options available.
  • dow dowtherm sr 1 ethylene glycol antifreeze_38e8dac7
  • dow dowtherm sr 1 ethylene glycol antifreeze_38e8dac7

Features Of Dow DOWTHERM SR-1 Ethylene Glycol Antifreeze

  1. High-purity ethylene glycol base formulated for extended service life in closed-loop heat transfer systems.

  2. Contains proprietary corrosion inhibitors to protect ferrous and non-ferrous metals including aluminum, copper, and solder.

  3. Low volatility and high thermal stability enable reliable performance across a broad operating temperature range (–34 °C to 120 °C).

  4. Pre-mixed with deionized water to 50 % v/v concentration, ready for direct use without dilution or additional treatment.

  5. Meets ASTM D1384 and ASTM D3306 standards for engine coolant/antifreeze, supporting long-term system integrity.

Typical Applications Of Dow DOWTHERM SR-1 Ethylene Glycol Antifreeze

  1. Industrial heating and cooling circuits in chemical processing plants and pharmaceutical manufacturing facilities.

  2. Thermal fluid systems for solar thermal collectors and concentrated solar power (CSP) installations.

  3. Chilled water systems and low-temperature process loops requiring freeze protection down to –34 °C.

  4. Heat exchanger networks in food & beverage production where NSF/ANSI Standard 60 compliance is required for incidental contact.

Specifications Of Dow DOWTHERM SR-1 Ethylene Glycol Antifreeze

Chemical TypeEthylene glycol-based inhibited antifreeze/coolant
Product FormLiquid, pre-mixed 50 % v/v with deionized water
AppearanceClear, pale yellow liquid, free of suspended solids
Primary ApplicationsClosed-loop heat transfer, industrial cooling, solar thermal systems
Key FeaturesCorrosion-inhibited, low foam, high thermal stability
BenefitsExtended fluid life, reduced maintenance, broad metallurgical compatibility
pH (25 °C)9.0–10.0
Freeze PointApprox. –34 °C (as supplied)


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