CHAPTER 12: Unit 6. Commonly used Alcohols & Ethers
The most well-known alcohol is ethanol, CH3CH2OH, formed by the fermentation of carbohydrates in grains and grapes is the alcohol present in alcoholic beverages. Fermentation requires yeast, which provides the needed enzymes for the conversion. Ethanol is also a common laboratory reagent, often used a s dissolving medium. Starch and cellulose are two polymers that contain many OH groups and belong to the family of molecules called carbohydrates.
Ethanol is also a common laboratory reagent, often used a s dissolving medium. Starch and cellulose are two polymers that contain many OH groups and belong to the family of molecules called carbohydrates.
| In medicinal field, isopropanol (CH3CHOHCH3) is commonly called rubbing alcohol. |
When ethanol is consumed, it is quickly absorbed in the stomach and small intestines and then rapidly transported in the bloodstream to other organs. The products of biological oxidation of ethanol is same as the laboratory results. When ethanol is ingested, it is oxidized to acetaldehyde in the liver first and then converted to acetic acid.
Usually Cr3+ is used to detect the presence of alcohol is blood. When the person breaths into the Cr6+ solution, it oxidizes the alcohol into acid and orange colored Cr6+ is reduced to green colored Cr3+ solution.
A general anesthetic drug that interferes with nerve transmission in the brain, resulting in a loss of consciousness and the sensation of pain. The discovery of diethyl ether as a general anesthetic was in nineteenth century.
Grapefruit mercaptan is responsible for typical characteristics odor of grapefruit.
Phenols and polyphenols are widely used as antiseptic. Phenolic compounds have been found to in present in green tea extract also. Phenols compounds are also present in splices like chili peppers and gingers.
o-phenylphenol ( anticeptic) Phenol I sthe starting reagent for preparing Paracetamol ( pain reliever, fever reducer).
