jeffreyp

I think if you can find some auto antifreeze based on PEG (polyethylene glycol) mix it with water to a 2 % solution you would basically have the same thing. Be sure before you do this you are not infringing on any patents here or abroad before proceeding...Polyethylene glycol (PEG) is a polymer made for ethylene oxide. It comes in almost any MW, from 200 to 60,000. 400 to 12,000 are the most common with 400 the most common for liquids and 2,500 for solid. (Anything over 800 to 1,000 is a solid at room temp.) It is nontoxic at any reasonable level. It is nonpolar while having lots of hydroxyl functionality. This makes it great for getting things to stay soluble in oil. Used a lot for compatibility reasons. Can also be used as a painless vehicle, instead of oil. Drawbacks include high viscosity and thermoplastic tendencies becoming more pronounced at the higher MWs. Also has mechanical properties (surface tension) that cause it to separate from oil.
Technical info: CAS# 25322-68-3, Miscible in water at the lower MWs slowly decreasing as the MW goes up. Density: range: 1.1 to 1.2 (increases as molecular weight increases) Melting Point: Melting point increases as molecular weight increases: PEG 400 = 4-8C (39-46F) PEG 600 = 20-25C (68-77F) PEG1500 = 44-48C (111-118F)