Glycols and polyols are highly reactive toward KMnO. Glycols demonstrating this behavior are known as "cloud-point glycols" and are used as shale inhibitors. Diethylene glycol is one of several glycols derived from ethylene oxide. Fatty phosphate esters, emulsifiers, and glycols are also used. Alternative substances (urea, alcohols, glycols) are often used at airports. Aspirin, Cyanide, Ethanolic ketosis, Glycols [ ethylene and propylene ], Isoniazid, Ferrous iron, [[Toluene], salicylates]. The vapors of some glycols including triethylene glycol can act as an air sanitizer. They are soluble in most alcohols, glycols and water in certain pH ranges. These substances were much more stable than the polyesters formed by using the glycols. Polyethylene glycols are more commonly used in practical applications. Commonly, PCBs are degraded by basis mixtures of glycols, which displace some or all chloride. Dilute solutions of KMnO convert alkenes into diols (glycols). Ethanol fermentation is not 100% selective with side products such as acetic acid and glycols. The silicone compound might also contain silicone glycols and other modified silicone fluids. Semi-synthetic resilin-based hydrogels, which incorporate poly(ethylene glycols), have also been reported.