Comparing Secondary Coolants

Specific gravity, freezing points and viscosity for secondary coolants like calcium chloride, sodium chloride, ethylene glycol and propylene glycol

The diagrams below can be used to compare specific gravity, freezing points and viscosity of common secondary coolants like

  • ethylene glycol
  • propylene glycol
  • calcium chloride
  • sodium chloride

Specific Gravity

calcium chloride, sodium chloride, ethylene glycol and 
 		propylene glycol - specific gravity diagram

Freezing Points

calcium chloride, sodium chloride, ethylene glycol and 
 		propylene glycol - freezing points diagram

  • tC = 5/9(tF - 32)

Viscosity

calcium chloride, sodium chloride, ethylene glycol and 
 		propylene glycol - viscosity diagram

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