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Alcohol

C2H5OH
Alcohol

Alcohol (specifically Ethanol) is a volatile, flammable, colorless liquid with a slight characteristic odor. It is a psychoactive substance and is the principal type of alcohol found in alcoholic drinks.

Description of what it is like

A clear, colorless liquid that evaporates quickly at room temperature. It burns with a blue, smokeless flame.

Origin and where to find it

  • Environments: Not found in pure form in nature. Found in small amounts in overripe, fermenting fruit.
  • Signs: Smell of fermentation.
  • It is a processed material.

Minimum processing required

  • Fermentation: Yeast converts sugars into ethanol and CO2. This yields up to ~15% alcohol.
  • Distillation: Heating the fermented liquid to separate alcohol (lower boiling point) from water. This yields higher concentrations (up to 95%).

Tools needed to work on it

  • Fermentation Vessel: Airlocked container.
  • Still (Alembic): For distillation (Pot, condenser, collection vessel).
  • Thermometer: To monitor distillation temperatures.

Common forms of use

  • Beverage: Beer, wine, spirits.
  • Medical: Antiseptic for cleaning wounds and instruments (70% concentration is best).
  • Fuel: Biofuel (bioethanol) for lamps, stoves, or engines.
  • Solvent: Dissolving resins, oils, and tinctures.

Possible substitutes

  • Vinegar: For cleaning (less effective disinfectant).
  • Oil: For fuel (lamps).

Limitations and common failures

  • Evaporation: Must be stored in sealed containers.
  • Water Absorption: Pure alcohol absorbs moisture from the air (hygroscopic).
  • Yeast Limits: Yeast dies at around 15% alcohol, stopping fermentation.

Risks and safety

  • Flammability: Highly flammable vapor and liquid.
  • Toxicity: Methanol (wood alcohol) can be produced if distilling wood/pectin-rich sources improperly, causing blindness or death.
  • Health: Consumption can lead to addiction and organ damage.
  • Sugar: Raw material for fermentation.
  • Yeast: The agent of fermentation.
  • Rectified Spirits: High-purity ethanol for extraction and fuel.
  • Vinegar: Produced if alcohol is exposed to acetobacter and oxygen.

Properties

  • Volatile
  • Flammable
  • Colorless liquid
  • Antiseptic
  • Intoxicating

Used for

  • Disinfectant
  • Fuel
  • Solvent
  • Recreational beverage
  • Preservative

Manufacturing / Process

Fermentation of sugars by yeast, followed by distillation.