Hi Falcon:
It was used for de-icing.
We also used vegetable and mineral based hydraulic fluids prior to what they are using to-day.
Survival equipment such as edible candles were also standard on most military aircraft up to the late 1960s.
Most people are more familiar with ethylene glycol, diol, dihydric alcohol which are a sweet but poisonous syrupy liquid used as an antifreeze and solvent.
Glycol is any of a class of alcohols having 2 hydroxyl groups in each molecule.
The inventions, proto types and progress made by militarys in peace and war is what usually brings forth commercial products used by the private sector.
Not being a chemist or very well versed on glycol I am sure if you looked on the internet or even asked your science teacher you would get a lot more help than I can give you.
Cheers...Happy Landings...Doug
