hydrosulphide
Very LowTechnical/Scientific
Definition
Meaning
A chemical compound containing the HS⁻ anion or the -SH functional group; a salt or derivative of hydrogen sulphide (H₂S).
In technical contexts, specifically refers to the salts (e.g., sodium hydrosulphide) used in industrial processes like paper pulping, leather tanning, and ore flotation.
Linguistics
Semantic Notes
Primarily a countable noun in chemistry. The term is precise and denotes a specific class of chemical compounds; not used metaphorically. Often confused with 'hydrogen sulphide' (the gas) or 'sulphide' (S²⁻).
Dialectal Variation
British vs American Usage
Differences
The primary difference is orthographic: British English prefers 'hydrosulphide', while American English uses 'hydrosulfide'.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally rare in both dialects, confined to chemical and industrial texts.
Vocabulary
Collocations
Grammar
Valency Patterns
[metal] hydrosulphidehydrosulphide of [metal]hydrosulphide solutionVocabulary
Synonyms
Neutral
Weak
Usage
Context Usage
Business
Might appear in procurement or safety documents for chemical manufacturing.
Academic
Used in chemistry textbooks, research papers, and lab reports on inorganic or analytical chemistry.
Everyday
Virtually never used.
Technical
Standard term in chemical engineering, industrial safety data sheets, and process descriptions.
Examples
By Part of Speech
adjective
British English
- The hydrosulphide concentration was measured.
- A hydrosulphide compound was synthesised.
American English
- The hydrosulfide concentration was measured.
- A hydrosulfide compound was synthesized.
Examples
By CEFR Level
- Sodium hydrosulphide is a key reagent in the Kraft process for making paper.
- The lab smelled faintly of rotten eggs due to the hydrosulphide solution.
- The reaction mechanism involves the nucleophilic attack of the hydrosulphide ion on the electrophilic carbon centre.
- Industrial effluent containing hydrosulphides must be treated to prevent the release of toxic hydrogen sulphide gas.
Learning
Memory Aids
Mnemonic
Think: HYDROgen + SULPHUR combined = HYDROSULPHIDE. It's the 'hydro' (hydrogen) part of hydrogen sulphide stuck to a metal.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'сероводород' (hydrogen sulphide, H₂S gas). 'Гидросульфид' is the correct equivalent.
- Avoid calquing the structure as 'water-sulphide'; it is specifically a hydrogen-sulphur compound.
Common Mistakes
- Misspelling as 'hydrosulfite' (a different ion, SO₂²⁻).
- Using it as an uncountable noun when referring to a specific salt (e.g., 'Add some hydrosulphide' vs 'Add sodium hydrosulphide').
- Pronouncing the 'ph' as /f/ in British English (it remains /f/ in both, but the spelling difference can cause confusion).
Practice
Quiz
What is the primary American English spelling of 'hydrosulphide'?
FAQ
Frequently Asked Questions
No. Hydrogen sulphide (H₂S) is a gas. A hydrosulphide (e.g., NaSH) is a salt containing the HS⁻ ion derived from that gas.
It is used in the pulp and paper industry, leather processing, mineral flotation in mining, and as a precursor in chemical synthesis.
They require handling in a fume hood with appropriate PPE, as they can release toxic H₂S gas and cause severe burns.
No, it is exclusively a noun (and can function attributively as an adjective, e.g., 'hydrosulphide salt'). There is no standard verb form.