ASCOTRAN® Corrosion Inhibitors

For Heat Transfer Fluids

ASCOTRAN® high-performance, long-lasting, corrosion inhibitors for heat transfer fluids based on glycols, water, salts and alcohols. Used widely in antifreeze, coolants, goethermal, solar panels, industrial freezing (secondary loop refrigeration) and industrial heat exchange systems.

Organic salt-based technology, free from 2-ethyl hexanoic acid. This means a safer product with less damage to plastic parts such as gaskets. Avoids the scaling deposits and abrasion issues experienced with silicate and phosphate technology. 

ASCOTRAN® RCX is suitable for use in car coolants, meeting ASTM D3306 and many OEM specifications. Grades are available with high resistance to brine and low temperatures. Excellent performance on a wide range of metal surfaces. Some grades with food contact approval.

Get in touch with our technical experts to find the right corrosion protection additive for your heat transfer fluid.


    • Organic, salt-based, corrosion inhibitors for water, salt, glycol and alcohols.

    • Extensive operational lifetime and highly effective.

    • Free from 2-ethyl hexanoic acid.

    • Food contact approvals. OEM approvals.


    • No abrasion or scaling issues. Minimise downtime and cleaning.

    • Multi-metal protection.

    • Grades that tolerate extreme salt and temperature environments.

    • Doesn't plasticize seals and gaskets. Reduce costly replacements and downtime.

    • Desirable safety and toxicity profile.


Typical Applications

    • Antifreeze and coolants, including for automotive.

    • Geothermal.

    • Solar panels.

    • Industrial freezing (secondary loop refrigeration).

    • Industrial heat exchange systems.

Also Used In

Featured grades with technical datasheets

A brief overview of the key grades is given below. You will find the Technical Datasheets (TDS) available for download. If you are looking for a Safety Datasheet (SDS) or Product Safety Information (PSI) then please get in touch by phone or via the contact buttons at the top of the page.

Should you not find what you are looking for here then please note that we have further grades available besides these. One of our Technical Sales team will be happy to help. All of the sales team are technically qualified and will be able to advise you on which product to choose. You can either call us, email us or fill in a quick form at the top of the page to get us to call you (Request a Callback). A sample can be requested via the button at the top of the page as well. Please note that by providing us with your contact details, you are agreeing for us to potentially contact you.

Related brochures & technical literature

You will find some of the key product brochures available for download below. There are more brochures available upon request. If you would like to discuss your enquiry further then please get in contact by phone or by filling in the "Request a Callback" form at the top of the page. Someone from the technical sales team will then call you within 24 hours, to discuss your project further.

ASCOTRAN® for Coolants & Heat Transfer Products - Product Matrix

A quick reference guide demonstrating which ASCOTRAN® products to pick for high-performance corrosion protection in coolants and heat transfer fluids.

ASCOTRAN® for Coolants & Heat Transfer Products Flyer /