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CoolFlow ECO2 Physical Properties


1.02 - 1.26 g/cm³


7.5 - 10.5 depending on inhibitors

Boiling Point:



a clear, slightly viscous liquid. It is slightly sweet to the taste and has a non-pungent but characteristic aroma.

Available in:

5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.


For a quote or assistance

Tel: +44 (0) 1792 586800

Ecologically and Environmentally Friendly Non-Toxic Secondary Refrigerant Antifreeze. Based on Refined Vegetable Extracts and BS6580 & ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

CoolFlow ECO2 has been especially formulated to provide Refrigeration and AC plant operators with a Secondary Refrigerant Antifreeze that is 100% RENEWABLE. I.E. not derived from non-renewable crude oil.

Antifreeze AntiFreeze

CoolFlow ECO2 is miscible with water in all proportions and can protect RAC systems down to -50°C depending on concentration. CoolFlow ECO2 exhibits super-cooling characteristics and mixtures containing in excess of 50% by volume do not freeze solid, alleviating any concern over possible expansion and burst damage.

non toxic Non-Toxic

CoolFlow ECO2 is based on sustainable Refined Vegetable Extracts that are Non-Toxic, Bio-Degradable and more thermally efficient than Propylene Glycol based coolants. Subsequently CoolFlow ECO2 could be considered the most ecologically friendly antifreeze available.

Renewable Renewable

Manufactured using a blend of refined vegetable extracts. I.E. they do not contain any crude oil derived or synthetic constituents

Corrosion control Corrosion Control

CoolFlow ECO2 contains synergistic corrosion inhibitors to protect metals commonly found in such systems. It has been tested in accordance with BS5117 and found to meet BS6580 and ASTM D1384 corrosion standards.

CoolFlow ECO2 also contains scale and biological inhibitors to help prevent fouling – thus promoting long operational life and high thermal efficiency.

Biodegradable Biodegradable

CoolFlow ECO2 is capable of being decomposed in to its constituent elements by natural processes. I.E. The product will not remain in the environment after it has been broken down. The approximate time of decomposition is detailed in the product Safety Data Sheet.

Quality Assured Quality Assured

All Hydratech products are manufactured in accordance with certified ISO9001-2008 procedures


As per BSRIA guide BG 29/2012 all pipe-work systems should be clean and free from biological contamination and debris prior to commissioning.

To minimise corrosion air ingress should be minimised. A pressurised system is best.

Determine the total system volume and add CoolFlow ECO2 to the system according to the minimum operating temperature required (see table, below). The minimum dose of CoolFlow ECO2 should not be less than 25% of the system volume and the maximum does not normally exceed 60%. We recommend the use of deionised, distilled or UltraPure™ water for this dilution. Avoid water containing high levels of calcium salts or Chlorides [Cl-].

Health & Safety: Please refer to the associated Safety Data Sheet. Available via Login or upon request.

Shelf Life: 3 years when stored in sealed containers out of direct sunlight.

Available in: 5, 10, 15, 20, 25, 205 & 1000 litre containers and bulk tankers.

CoolFlow ECO2 can also be supplied as a Ready-To-Use solution.

Mixing Guide

Frost Protection °C v/v of CoolFlow ECO2 Refractive Index
-10 25% 1.355
-15 32% 1.362
-20 38% 1.367
-25 43% 1.372
-30 48% 1.377
-35 52% 1.380

When measuring the percentage of CoolFlow ECO2 in the system use a refractometer

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