Alcohol Notes with PDF
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Types of Alcohols and Their Properties
Methyl Alcohol (Methanol)
- Common Name: Wood spirit.
- Production: It is not produced by the fermentation of sugar.
- Properties:
- It is highly toxic.
- It is the offending substance in liquor tragedies that causes blindness and death.
Ethyl Alcohol (Ethanol)
- Production: Produced by the fermentation of sugar.
- The enzyme responsible for converting glucose to ethyl alcohol is zymase.
- Molasses (a by-product of sugar production) is an excellent raw material for its production.
- The alcohol derived from the fermentation of germinated barley grains is used to make beer.
- Primary Use: It is the primary alcohol in alcoholic beverages.
Denaturation of Alcohol
- Definition: The process of making ethyl alcohol unfit for drinking is called denaturation.
- Denaturing Agents: Substances added to denature alcohol include:
- Methanol
- Pyridine
- Sometimes Potassium Cyanide
Testing and Detection
Drunk Driving Test
- Test Name: Breath test.
- Procedure: Police use filter paper impregnated with Potassium dichromate-sulfuric acid.
- Principle: This chemical reacts with ethanol from the breath.
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