propanoic acid
Definition
- Noun:
- A liquid fatty acid: A carboxylic acid with the chemical formula C₂H₅COOH. It is a clear, colorless liquid with a pungent, unpleasant odor, naturally occurring in some biological systems and industrial processes.
Usage
- As a common noun: "Propanoic acid" is used as the systematic name for this specific chemical compound. It is often discussed in contexts of chemistry, biology, and industry.
- As a substance: It is referred to as a substance that can be found, produced, used, or studied.
Examples
- Noun:
- The characteristic smell of sweat is partly due to propanoic acid.
- Propanoic acid is used as a preservative in animal feed and human foods.
- In the laboratory, we synthesized propanoic acid from propanol.
Advanced Usage
- In biochemical contexts: Propanoic acid is a metabolic intermediate. For example, it is produced during the fermentation of carbohydrates by bacteria.
- Certain gut bacteria generate propanoic acid as a byproduct of digestion.
- In industrial chemistry: It is a precursor in the manufacture of various polymers, herbicides, and pharmaceuticals.
- The plant produces plastics using propanoic acid as a starting material.
Variants and Related Words
- Propionate (n): The salt or ester of propanoic acid (e.g., calcium propionate).
- Calcium propionate is a common food preservative.
- Propionic acid (n): A synonym for propanoic acid. This is the most common alternative name.
- Propionic acid and propanoic acid refer to the same compound.
Synonyms
- Propionic acid: The most direct and commonly used synonym in scientific and industrial contexts.
- Methylacetic acid: An older, less common systematic name.
Related Phrases / Terms
- Fatty acid: Propanoic acid is classified as a short-chain fatty acid.
- Propanoic acid is the simplest fatty acid that is liquid at room temperature.
- Carboxylic acid: Propanoic acid is a member of this functional group class.
- Like all carboxylic acids, propanoic acid reacts with bases to form salts.
Noun
-
a liquid fatty acid found in milk and sweat and in fuel distillates
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