aluminium sulphate: meaning, definition, pronunciation and examples
C2Technical, Scientific, Industrial
Quick answer
What does “aluminium sulphate” mean?
A white crystalline chemical compound with the formula Al₂(SO₄)₃, used primarily in water purification and as a mordant in dyeing.
Audio
Pronunciation
Definition
Meaning and Definition
A white crystalline chemical compound with the formula Al₂(SO₄)₃, used primarily in water purification and as a mordant in dyeing.
In industrial and chemical contexts, it refers to the hydrated or anhydrous salt used as a flocculant, astringent, or in paper manufacturing. In horticulture, it can refer to a soil additive to lower pH.
Dialectal Variation
British vs American Usage
Differences
Spelling: 'aluminium sulphate' (UK) vs. 'aluminum sulfate' (US). Pronunciation of 'aluminium' differs (UK: /ˌæl.ʊˈmɪn.i.əm/, US: /əˈluː.mɪ.nəm/). The American spelling for the anion is typically 'sulfate'.
Connotations
Identical technical connotations. The spelling/pronunciation differences are purely orthographic/linguistic, not semantic.
Frequency
Equally frequent in relevant technical fields in both regions, but the regional spelling is consistently used.
Grammar
How to Use “aluminium sulphate” in a Sentence
[Process] requires/uses aluminium sulphate.Aluminium sulphate is added to [substance/medium].The [product] contains aluminium sulphate.Vocabulary
Collocations
Examples
Examples of “aluminium sulphate” in a Sentence
verb
British English
- The plant will sulphate the aluminium compounds to produce the final product.
American English
- The process sulfates the aluminum oxide.
adjective
British English
- The aluminium-sulphate-based flocculant is highly effective.
American English
- We need an aluminum-sulfate solution.
Usage
Meaning in Context
Business
Used in procurement, manufacturing cost sheets, and supply chain discussions for water treatment or paper industries.
Academic
Used in chemistry textbooks, lab reports, and environmental engineering papers discussing coagulation processes.
Everyday
Virtually never used. A gardener might refer to 'alum' or 'soil acidifier'.
Technical
Precise term in chemical formulations, water treatment plant operational manuals, and industrial safety data sheets (SDS).
Vocabulary
Synonyms of “aluminium sulphate”
Neutral
Weak
Watch out
Common Mistakes When Using “aluminium sulphate”
- Misspelling as 'aluminium sulfite' (different anion). Incorrectly treating it as a count noun (e.g., 'an aluminium sulphate'). Incorrect plural *'aluminiums sulphate'.
FAQ
Frequently Asked Questions
It can be an irritant to eyes, skin, and respiratory system. It should be handled with appropriate personal protective equipment (PPE) as per its Safety Data Sheet.
Yes, it is sometimes used to acidify alkaline soils for plants like hydrangeas (to blue the flowers) or blueberries. Use must be careful and measured to avoid harming plants.
'Alum' traditionally refers to potassium aluminium sulphate (a double salt). In informal contexts, 'alum' may be used for aluminium sulphate, but they are chemically distinct for precise work.
The element name differs: 'Aluminium' (UK, IUPAC) vs. 'Aluminum' (US). The anion spelling follows the regional pattern: '-ph-' (UK Greek-derived) vs. '-f-' (US Latin-derived) in 'sulphate/sulfate'.
A white crystalline chemical compound with the formula Al₂(SO₄)₃, used primarily in water purification and as a mordant in dyeing.
Aluminium sulphate is usually technical, scientific, industrial in register.
Aluminium sulphate: in British English it is pronounced /ˌæl.ʊˌmɪn.i.əm ˈsʌl.feɪt/, and in American English it is pronounced /əˌluː.mɪ.nəm ˈsʌl.feɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'ALuminium SUlphate Helps FLOCculate' – A.L.S. helps form flocks (flocs) in dirty water.
Conceptual Metaphor
A CLARIFIER or PURIFIER (as it binds impurities). A FIXATIVE (in dyeing).
Practice
Quiz
What is the primary industrial use of aluminium sulphate?