ROTOFROST 300 PLUS heat transfer fluid contains specially formulated packages of industrial inhibitors that help prevent corrosion. Aqueous solutions of ROTOFROST 300 PLUS fluid are designed to provide freeze/ burst and corrosion protection, as well as efficient heat transfer, in water-based, closed-loop heating and air-conditioning systems.


HVAC/R Winterization Solar applications Data centers
Process cooling & heating Ice & snow melting systems Refrigeration systems Line heaters
Plastic extrusion Process Geothermal energy Cooling towers Hydro testing
Heat recovery

Typical Properties

Product Type: Inhibited Propylene Glycol [Dye]
Composition (% by weight)
Propylene Glycol
Performance Additives
Color Bright yellow
Temperature Range -50°Fto 325°F; fluid freeze protection to below -60°F, system burst protection to below -100°F.
Specific Gravity 15/15°C (60/60°F) 1.053-1.063
pH of Solution (50% Glycol) 9.5-10.5
Reserve Alkalinity (min.) 15.0 ml
Freezing Point °C (°F) <-60


Pre-mixed solutions Available for fuel cells and electronics
Custom blends with pH adjusted Available for high-temperature aluminium systems
Non-toxic Available worldwide
Can be re-inhibited Cost-effective
Proven performance Total fluid care option
Biocide is available Dye options available: fluorescent green, FD&C colors: red, pink, blue, and yellow.

Technical Content