De-icers tend to be mixes of constituents that do not freeze, are somewhat volatile, and mildly lubricious. These aid in melting the ice, reducing residue from the de-icer, and helping the ice break free of the substrate.
Below is a version of a de-icer based on some minimal research of commericial de-icers, in particular 1Z (Einszett) De-Icer's MSDS. Most of these products use similar ingredients to off-the-shelf washer fluid, namely: methanol, ethylene glycol, and glycerin. My goal was to create a cheap-to-make version that is more environmentally friendly than the commercially available products.
While sort of a joke, I believe you could probably fine tune a mixture of simple household (my household) products to achieve the results of the 1Z product.
(Prototype Receipe.. may need augmentation)
in a 32oz spray bottle:
- 10 oz. PROPYLENE glycol antifreeze (i.e. "safe", non toxic, not the EG stuff)
- 8 oz. of the cheapest, strongest hooch you can find (I have the 95% alcohol everclear)
- 12 oz. of distilled water
- 2 oz. of glycerin (available pretty easily)
or 1 oz dish soap
You may have to adjust the alcohol/water ratios if you get a lower proof. ie if you get 80 proof, use no water and 20 oz of alcohol.
I'm guessing on the glycerin content but I think it's partly for lubrication. I bet you could replace it with a half oz or so of ONR.
It might be fun to try, cheap, and much less toxic than what's out there.