What is the isopropyl alcohol for?
Isopropyl alcohol (C3H8O), also known as rubbing alcohol, is an alcoholic mixture intended for external use as an antiseptic; it usually contains 70% by volume of absolute alcohol or isopropyl alcohol; the remainder consists of water, denaturants, and perfume oils; used as a rubefacient for muscle and joint aches and
Isopropanol and isopropyl alcohol are different names for the same chemical compound. The confusion comes from mixing two standards for naming chemicals. The correct name under the IUPAC system is Propan-2-ol; however, isopropyl alcohol is the most commonly-used name for this chemical.
- The type of alcohol that rubbing alcohol is made with (isopropyl alcohol) is metabolized differently by your body than the type of alcohol in beer, wine, and liquor (ethyl alcohol), so, according to the Betty Ford Center, drinking even a small amount of rubbing alcohol can have potentially fatal consequences.
- DNA purification from detergents, proteins, salts and reagents used during cell lysis step. The most commonly used procedures are: Ethanol precipitation usually by ice-cold ethanol or isopropanol. Since DNA is insoluble in these alcohols, it will aggregate together, giving a pellet upon centrifugation.
- While ethanol is consumed when drinking alcoholic beverages, consuming ethanol alone can cause coma and death. Ethanol may also be a carcinogenic; studies are still being done to determine this. However, ethanol is a toxic chemical and should be treated and handled as such, whether at work or in the home.
Alcohols are less polar than water. This means that alcohols are better solvents of organic molecules. The isopropyl group is large and nonpolar, so isopropyl alcohol is less polar than methanol and ethanol. It is a component of nail polish removers as organic compounds in nail polish become soluble.
- Isopropyl alcohol (or propan-2-ol) is also sometimes called isopropanol. That is strictly speaking an incorrect mixture of two different systems for naming alcohols. Isopropyl alcohol is the isomer of propanol which has the OH group on the middle of the three carbon atoms making up the molecule.
- The bigger the non-polar hydrocarbon part of their molecule (the part which isn't OH), the less polar they are: water is more polar than methanol, which is more polar than ethanol (drinking alcohol), which is more polar than isopropyl alcohol (some kinds of rubbing alcohol).
- Answer: Rubbing alcohol is not ethyl alcohol (beverage alcohol), but isopropyl alcohol, a totally different chemical than the alcohol of beer, wine, or liquor. The lethal dose of isopropyl alcohol by mouth in adult humans is about 8 ounces. Another kind of poison is wood alcohol.
Updated: 2nd October 2019