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We make your perfect water.
Heat transfer fluids

coracon® GreenProducts
Sustainable. Innovative. Effective.

coracon® SOL EKO: Ecological solar fluid (concentrate)<br/> Heat transfer fluid for solar systems subject to higher temperatures; with antifreeze made from renewable raw materials

​​​​​​​Characteristics

  • Free from nitrite, nitrate, phosphate, secondary amines, borate, 2-ethylhexanoic acid
  • Biodegradable
  • Colour: clear, without pigmentation
  • Temperature stability: 214°C
  • Antifreeze based on: 1.3-propanediol
  • Specific weight: 1.05g/ml (DIN 51757)
  • pH value: approx. 8.0 (ASTM-D 1287)
  • Heat conductivity (at 20°C), 50 vol-%: 0.40W/m*K
  • Spec. heat capacity (at 20°C), 50 vol-%: 3.45kJ/(kg*K)
  • Reserve alkalinity: approx. 2ml 0.1 HCL
  • Viscosity at 20°C, 50% dilution: 5.8 mm²/s
  • Boiling point (°C): > 103 (ASTM-D 1120)
  • Burning point (°C): > 100 (ASTM-D 51758)
  • Minimum use concentration: 35 vol-%
  • No hazardous good, water hazard class 1

Product information as a PDF file

coracon® GEKO E: Heat transfer fluid for near-surface geothermal energy

Environmentally friendly heat transfer fluid based on 1.3-propanediol for near-surface geothermal energy.

​​​​​​​Characteristics

  • Specific weight at 20°C: 1.055–1.060g/ml (DIN 51757)
  • Appearance: clear, liquid not stained
  • pH value (1:1 with neutr. water): 8.0–8.5 (ASTM-D 1287)
  • Boiling point of concentrate: > 214°C (ASTM-D 1120)
  • Pour point of concentrate: < –15°C
  • Spec. heat capacity in 10% dilution at 25°C: 4.029 J*kg-1*K-1
  • Heat conductivity in 10% dilution at 25°C: 0.575 W/m*K
  • Kinem. viscosity in 10% dilution at 0°C: 13 mm²/s
  • Kinem. viscosity in 10% dilution at 25°C: 3 mm²/s

Product information as a PDF file

coracon® SOL EKO: Ecological solar fluid (concentrate)

Heat transfer medium for solar systems subject to higher temperatures; with antifreeze made from renewable raw materials

​​​​​​​Characteristics

  • Free from nitrite, nitrate, phosphate, secondary amines, borate, 2-ethylhexanoic acid
  • Biodegradable
  • Colour: clear, fluid stained green
  • Temperature stability: 214°C
  • Antifreeze based on: 1.3-propanediol
  • Specific weight: 1.06g/ml (DIN 51757)
  • pH value: 7.5–8.5 (ASTM-D 1287)
  • Viscosity at 20°C, 50%: <10mm²/s
  • Viscosity at 20°C, 100%: 50mm²/s
  • Boiling point (°C): > 103 (ASTM-D 1120)
  • Burning point (°C): > 100 (ASTM-D 51758)
  • No hazardous substance, no hazardous good, water hazard class 1

Product information as a PDF file

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Service Center

We can help quickly and competently.

Your contact: 
Ronald Klukas
Head of Heat Transfer Fluids Competence Center
Phone: +49 89 899 369 12
E-mail: r.klukasaqua-concept-gmbh.eu