Antifrogen® N, 25L. Universal heat transfer fluid

Antifrogen® N - Universal Heat Transfer Fluid

Antifrogen® N is a high-performance heat transfer fluid and antifreeze manufactured by Clariant, based on monoethylene glycol with long-lasting anti-corrosion additives.

Key Features

• Base: High-purity monoethylene glycol
• Colour: Pale yellow
• Boiling point: Approximately 198°C
• Temperature range: -50°C to +150°C (depending on concentration)
• Formulation: Free from nitrites, amines, borates, silicates and phosphates

Applications

• Closed hot water heating systems
• Heat pumps and heat recovery systems
• Industrial cooling circuits
• HVAC systems
• Temperature control in industrial processes
• Component cooling in manufacturing technology

Benefits

• Reliable, long-lasting protection against frost, corrosion and deposits
• High thermal stability
• No phase separation when mixed with water
• Extended service life with minimal maintenance

Recommended Maintenance

Check concentration annually. Performance monitoring every 1-2 years. Storage stability: 2 years in original sealed container.

Note: Antifrogen® N is not suitable for food or pharmaceutical applications. For these uses, please use Antifrogen® L.

Antifrogen® N — Frequently asked questions

What is the operating temperature range of Antifrogen N?

From -38 °C to +150 °C depending on the dilution with demineralised water. At 50 % in water it protects against freezing down to -38 °C and can be heated up to 150 °C in a closed pressurised system. Higher concentrations lower the freezing point further but increase viscosity.

Is Antifrogen N suitable for food-contact applications?

No. Antifrogen N is based on monoethylene glycol (MEG) and corrosion inhibitors; it is not certified for food contact. For circuits in indirect contact with food or pharmaceuticals use Antifrogen L, which is based on propylene glycol and approved for those applications.

Which type of water should I mix with Antifrogen N?

Demineralised or distilled water only. Tap water contains calcium, magnesium and chlorides that react with the inhibitor package, reducing fluid life and causing deposits in heat exchangers. If only tap water is available, confirm with Lubricalia a maximum hardness of 3 °dH.

How long does Antifrogen N last in a closed system?

In a leak-free, air-free closed system with pH kept between 8.5 and 9.5, Antifrogen N can operate for 10 years or more. Analyse pH, alkaline reserve and MEG concentration annually. The minimum concentration for inhibitors to work is 20 % by volume.