propionic acid: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “propionic acid” mean?
A naturally occurring carboxylic acid (C₃H₆O₂) with a pungent odour, used as a preservative and in chemical synthesis.
Audio
Pronunciation
Definition
Meaning and Definition
A naturally occurring carboxylic acid (C₃H₆O₂) with a pungent odour, used as a preservative and in chemical synthesis.
In biochemistry, it refers to a three-carbon fatty acid (propanoic acid) that is a metabolic intermediate, and industrially it is a precursor to various polymers, herbicides, and pharmaceuticals.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling of derivatives may follow regional conventions (e.g., 'propionyl' vs. 'propionyl').
Connotations
Neutral technical term in both varieties.
Frequency
Equally low frequency and highly specialised in both regions.
Grammar
How to Use “propionic acid” in a Sentence
Propionic acid is used as [a preservative/a precursor].The [production/formation] of propionic acid.[Compound X] reacts with propionic acid to form [Y].Vocabulary
Collocations
Examples
Examples of “propionic acid” in a Sentence
verb
British English
- The bacteria will propionify the substrate under these conditions.
American English
- The compound can be propionylated using this reagent.
Usage
Meaning in Context
Business
Rare, used in specific industrial contexts (e.g., 'The plant increased its capacity for propionic acid production.').
Academic
Common in chemistry, biochemistry, and food science research papers and textbooks.
Everyday
Virtually never used in everyday conversation.
Technical
The primary register for this term; precise and unambiguous.
Vocabulary
Synonyms of “propionic acid”
Neutral
Weak
Watch out
Common Mistakes When Using “propionic acid”
- Misspelling as 'propionic' (missing second 'i').
- Incorrect pronunciation stressing the first syllable (/ˈproʊpɪɒnɪk/).
- Using it as a countable noun (e.g., 'a propionic acid').
FAQ
Frequently Asked Questions
In concentrated form, it is corrosive and irritates skin and eyes. In the diluted forms used as food preservatives (e.g., calcium propionate), it is generally recognized as safe.
It has a pungent, rancid, somewhat sour odour, often described as similar to body odour or Swiss cheese.
It occurs naturally in some types of cheese (Swiss cheese), and it is also a product of fermentation by certain bacteria in the human gut and the rumen of animals.
The systematic IUPAC name is propanoic acid.
A naturally occurring carboxylic acid (C₃H₆O₂) with a pungent odour, used as a preservative and in chemical synthesis.
Propionic acid is usually technical/scientific in register.
Propionic acid: in British English it is pronounced /ˌprəʊpɪˈɒnɪk ˈæsɪd/, and in American English it is pronounced /ˌproʊpiˈɑːnɪk ˈæsɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
PROPIONIC acid has THREE carbons (PROP- as in propane, which has three carbon atoms). Think: PROP = three, like a propeller with three blades.
Conceptual Metaphor
Often framed as a 'BUILDING BLOCK' or 'PRECURSOR' in chemical synthesis.
Practice
Quiz
Propionic acid is primarily classified as what type of compound?