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Also referred to as Glycerin and Glycerol, with the chemical name of Propane-1,2,3-triol.
Glycerine can be derived from vegetable matter and animal bones. It could be considered as Natures natural antifreeze.
Glycerine cost and availability has been recently improved as a result of growth in the bio-diesel market. Mong, a by-product of bio-diesel can be filtered and processed in to fatty acids and glycerine.
Although water-glycerine mixtures are prone to biological contamination, blends using bio-glycerine in conjunction with other antifreeze chemicals can neutralise any bacterial and algae growth.
Neat Glycerine is more viscous than neat Propylene Glycol, but when it is mixed in the appropriate concentration with water and other antifreeze chemicals the thermal performance is better than Propylene Glycol. Subsequently Glycerine based formulations such as CoolFlow ECO2 are a practical alternative to Propylene Glycol formulations such as CoolFlow NTP.