manganous sulfate
Very LowTechnical/Scientific
Definition
Meaning
A chemical compound with the formula MnSO₄, containing manganese in the +2 oxidation state.
A pale pink, water-soluble salt used as a fertilizer, animal feed supplement, and in various industrial processes such as electrolytic manganese production and ceramics manufacturing.
Linguistics
Semantic Notes
The term 'manganous' specifically denotes the Mn²⁺ ion, distinguishing it from other manganese compounds like manganic (Mn³⁺ or Mn⁴⁺) compounds. It is a specific name within inorganic chemistry nomenclature.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. The spelling 'sulfate' is standard in American English, while 'sulphate' is the traditional British spelling, though 'sulfate' is increasingly common in scientific contexts in the UK.
Connotations
Identical technical connotations in both varieties.
Frequency
Extremely rare outside of chemistry, agriculture, and industrial contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[SUBJECT] contains manganous sulfate.Manganous sulfate is added to [OBJECT].[PROCESS] requires manganous sulfate as a precursor.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Used in procurement, supply chain, and technical specifications for agricultural or industrial products.
Academic
Common in chemistry, materials science, soil science, and agricultural research papers and textbooks.
Everyday
Virtually never used in everyday conversation.
Technical
The primary context, used in chemical formulations, laboratory procedures, fertilizer compositions, and industrial process descriptions.
Examples
By Part of Speech
adjective
British English
- The manganous sulphate solution was prepared.
- A manganous sulphate precursor is often used.
American English
- The manganous sulfate reagent was titrated.
- Manganous sulfate fertilizer is applied to correct deficiencies.
Examples
By CEFR Level
- Manganous sulfate is a chemical.
- Farmers sometimes add manganous sulfate to soil to help plants grow.
- The pale pink colour is characteristic of manganous sulfate solutions.
- The electrolytic production of manganese metal typically employs an aqueous solution of manganous sulfate as the electrolyte.
- Analysis confirmed the precipitate was manganous sulfate monohydrate, as indicated by its crystalline structure.
Learning
Memory Aids
Mnemonic
Think 'MANGAnous' for MANGAnese, and 'SULfate' for the SULfur-based part (SO₄). It's the 'ous' one with the lower (+2) charge.
Conceptual Metaphor
A nutrient/ingredient metaphor: conceptualized as a 'building block' or 'essential additive' in industrial and biological systems.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'manganous' as simply 'марганцевый' without specifying the valence. The more precise equivalent is 'сульфат марганца(II)' or 'сернокислый марганец'.
- Do not confuse with 'перманганат' (permanganate), which is a different compound (KMnO₄).
Common Mistakes
- Misspelling as 'manganese sulfate' without specifying the oxidation state, which is ambiguous.
- Pronouncing 'manganous' with a hard 'g' as in 'go'; it's a soft 'g' as in 'giant'.
- Confusing it with the more common 'magnesium sulfate' (Epsom salts).
Practice
Quiz
What is the primary oxidation state of manganese in manganous sulfate?
FAQ
Frequently Asked Questions
In common, less precise usage, 'manganese sulfate' often refers to manganous sulfate (MnSO₄). However, 'manganous' specifically denotes the +2 oxidation state, making it the more precise term.
Its main uses are as a micronutrient fertilizer in agriculture, a nutritional supplement in animal feed, and a chemical precursor in industries like electronics (for producing electrolytic manganese dioxide) and ceramics.
It is generally considered low in toxicity but can be an irritant to eyes and skin. As with all chemicals, it should be handled according to its safety data sheet (SDS) guidelines.
'Manganous' refers to compounds containing manganese in the +2 oxidation state (e.g., MnSO₄). 'Manganic' refers to compounds with manganese in a higher oxidation state, typically +3 or +4 (e.g., manganic oxide, Mn₂O₃).