Corrosionpedia explains Denatured Alcohol. When ethanol is added some chemical substances, the product is unfit for human consumption. The type of additive will determine whether the denatured alcohol will be used as fuel, a cosmetic ingredient or as a cleaner. Common denaturants used singularly or combined include methanol, gasoline, kerosene, chloroform, gasoline, naphthalene methyl alcohol benzene, butyl alcohol and pyridine.
Making the world better, one answer at a time. Without adequate blood supply the human leg can only survive six hours without blood flow. If blood flow is not re established within those six hours amputation may become necessary.
Problems with Tourniquet Use. The majority of external hemorrhage can be controlled by direct pressure. Preventing arterial blood flow to a limb with result in ischaemia (restriction in blood supply). Continuous application for longer than 2 hours can result in permanent nerve injury, muscle injury. Muscle damage is nearly complete by 6 hours, with likely required amputation. The general conclusion is that a tourniquet can be left in place for 2 hours with little risk of permanent ischaemic injury.