Glycol Heat Transfer Fluid

• Choice of Dowtherm SR-1 for Industrial Grade and Dowfrost for Food Grade
• Corrosive
  • ​All salts are very corrosive
  • Long term protection is impossible even with corrosion inhibitors
  • Glycols (without corrosion inhibitors) are corrosive to most metals
  • Oxidize to form acids --> low pH --> acidic pH is corrosive
  • Must use correct type of corrosion inhibitor technology
    
  • Corrosion damage can occur in less than 2 years
  • Worse for high temperatures and high exposure to air or dissolved O2
• Dow heat transfer fluids are properly formulated with corrosion inhibitors and pH buffers which:
  
  • Passivate metal surfaces  prevent corrosion
    
  • Neutralize degradation compounds  prevent pH drop
    
  • Thermoxidatively stable provide long term protection