aminobenzoic acid: meaning, definition, pronunciation and examples
lowtechnical/scientific
Quick answer
What does “aminobenzoic acid” mean?
A chemical compound consisting of a benzoic acid molecule with an amino group attached.
Audio
Pronunciation
Definition
Meaning and Definition
A chemical compound consisting of a benzoic acid molecule with an amino group attached; primarily referring to two isomers (ortho-, para-) used in organic synthesis, dye production, and some biological functions.
Most commonly refers to para-aminobenzoic acid (PABA), a compound found in some foods and historically used in sunscreens and as a B-vitamin factor. In technical contexts, it serves as a building block for more complex organic molecules like sulfa drugs and azo dyes.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Pronunciation differences follow standard UK/US patterns for stress and vowel sounds.
Connotations
Identical scientific connotations. In consumer contexts (e.g., sunscreen labels), 'PABA' is more common than the full name in both regions.
Frequency
Equally low frequency in general language, but standard in chemistry, biochemistry, and cosmetic science texts in both varieties.
Grammar
How to Use “aminobenzoic acid” in a Sentence
The synthesis of [aminobenzoic acid] involves...[Aminobenzoic acid] is a precursor to...to esterify [aminobenzoic acid]to derive X from [aminobenzoic acid]Vocabulary
Collocations
Examples
Examples of “aminobenzoic acid” in a Sentence
verb
British English
- The compound was aminobenzoated to increase its solubility.
American English
- Researchers attempted to aminobenzoate the polymer backbone.
adjective
British English
- The aminobenzoic moiety is crucial for activity.
American English
- An aminobenzoic derivative showed promising results.
Usage
Meaning in Context
Business
Rare, except in pharmaceutical or chemical manufacturing reports (e.g., 'Feedstock costs for aminobenzoic acid rose by 5%').
Academic
Standard in chemistry, biochemistry, and pharmacology papers (e.g., 'The role of para-aminobenzoic acid in folate synthesis was investigated').
Everyday
Very rare. May appear on sunscreen or supplement labels as 'PABA-free'.
Technical
Core term in organic chemistry, medicinal chemistry, and cosmetic science (e.g., 'The diazonium salt of aminobenzoic acid was coupled with phenol').
Vocabulary
Synonyms of “aminobenzoic acid”
Strong
Neutral
Weak
Vocabulary
Antonyms of “aminobenzoic acid”
Watch out
Common Mistakes When Using “aminobenzoic acid”
- Mispronouncing 'benzoic' as /ˈbɛnzɔɪk/ instead of /bɛnˈzəʊɪk/ (UK) or /bɛnˈzoʊɪk/ (US).
- Using 'aminobenzoic acid' without specifying the isomer in a precise chemical context.
- Assuming it is always a vitamin; it is a factor for some bacteria but not an essential human vitamin.
FAQ
Frequently Asked Questions
Para-aminobenzoic acid (PABA) is sometimes called a B-vitamin factor, but it is not an essential vitamin for humans. It is a growth factor for certain bacteria and is a component of the folate molecule.
Some people developed skin irritation or allergic reactions to PABA when it was commonly used in sunscreens. 'PABA-free' labels indicate the product does not contain this specific compound, though it may contain chemically related filters.
These are structural isomers. The terms refer to the position of the amino group (-NH2) on the benzene ring relative to the carboxyl group (-COOH). 'Ortho-' means adjacent (1,2), 'meta-' means separated by one carbon (1,3), and 'para-' means opposite (1,4). Their chemical and biological properties differ.
As with all chemicals, safe handling depends on the specific isomer and context. Standard laboratory precautions (gloves, eye protection, fume hood) should be followed. Consult the relevant Safety Data Sheet (SDS) for the specific compound.
A chemical compound consisting of a benzoic acid molecule with an amino group attached.
Aminobenzoic acid is usually technical/scientific in register.
Aminobenzoic acid: in British English it is pronounced /əˌmiːnəʊbɛnˈzəʊɪk ˈæsɪd/, and in American English it is pronounced /əˌminoʊbɛnˈzoʊɪk ˈæsɪd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Imagine a BENZO (car) with an AMINO (protein-building) group attached to it, and it's ACIDic (sour). A protein-building, sour sports car = AMINOBENZOIC ACID.
Conceptual Metaphor
BUILDING BLOCK (for more complex molecules); SHIELD (in its sunscreen function).
Practice
Quiz
In which everyday product might you historically have found para-aminobenzoic acid (PABA)?