bisulfide: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “bisulfide” mean?
A chemical compound containing two sulfur atoms bonded together, often referring to a salt or ester of hydrosulfuric acid where one hydrogen atom is replaced by a metal or organic group (e.
Audio
Pronunciation
Definition
Meaning and Definition
A chemical compound containing two sulfur atoms bonded together, often referring to a salt or ester of hydrosulfuric acid where one hydrogen atom is replaced by a metal or organic group (e.g., sodium bisulfide, NaHS).
In industrial and chemical contexts, it can refer to compounds used in processes like ore flotation, paper pulping (kraft process), or leather tanning. In older texts or specific contexts, 'bisulfide' might be used interchangeably with 'disulfide' (containing two sulfur atoms bonded to each other, as in carbon disulfide, CS₂), though modern IUPAC nomenclature distinguishes them.
Dialectal Variation
British vs American Usage
Differences
Spelling: The British variant 'bisulphide' is increasingly rare, with 'bisulfide' following the modern trend of using 'f' in scientific terms. Both spellings are understood. The American spelling 'bisulfide' is dominant in international scientific literature.
Connotations
No significant difference in connotation. The term is purely technical.
Frequency
Extremely low frequency in general language. Almost exclusively found in chemistry textbooks, patents, industrial safety data sheets, and environmental regulations.
Grammar
How to Use “bisulfide” in a Sentence
The process utilises [sodium bisulfide] as a reducing agent.Exposure to [high concentrations of bisulfide] can be hazardous.The formation of [the bisulfide ion] occurs in anoxic environments.Vocabulary
Collocations
Examples
Examples of “bisulfide” in a Sentence
noun
British English
- The addition of sodium bisulphide improved the efficiency of the pulp digestion.
- The geochemical profile showed a peak in bisulphide concentration at the sediment-water interface.
American English
- Sodium bisulfide is a key component in the hide unhairing process.
- Regulations limit bisulfide emissions from the wastewater treatment plant.
Usage
Meaning in Context
Business
Found in reports on chemical supply, manufacturing costs, or compliance with environmental regulations regarding effluent.
Academic
Used in chemistry papers on inorganic synthesis, geochemistry (e.g., in anoxic waters), or environmental engineering.
Everyday
Virtually never used. A person might encounter it on a safety label for a chemical product.
Technical
The primary domain. Used in formulas, process descriptions, hazard assessments, and analytical chemistry protocols.
Vocabulary
Synonyms of “bisulfide”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “bisulfide”
- Using 'bisulfide' to mean 'disulfide' (e.g., iron disulfide, FeS₂, is pyrite, not a bisulfide).
- Misspelling as 'bisulphide' in modern international journals.
- Pronouncing it as /baɪˈsʌl.fɪd/ (with a short 'i') instead of /-faɪd/.
FAQ
Frequently Asked Questions
No. In modern standard chemical nomenclature, 'bisulfide' (or hydrosulfide) refers to salts containing the HS⁻ anion (e.g., NaHS). 'Disulfide' refers to compounds containing a -S-S- bond (e.g., FeS₂, or organic disulfides R-S-S-R').
You would encounter it in technical contexts: chemistry laboratories, industrial manufacturing (paper, leather, mining), environmental science reports on water quality, and chemical safety documentation (MSDS).
Bisulfide salts in water can release hydrogen sulfide gas (H₂S), which has the characteristic odour of rotten eggs. This is a common identification test and a significant safety hazard.
It is not incorrect but is considered an older, chiefly British variant. The modern international scientific standard, followed by IUPAC and most journals, uses 'bisulfide' (with an 'f').
A chemical compound containing two sulfur atoms bonded together, often referring to a salt or ester of hydrosulfuric acid where one hydrogen atom is replaced by a metal or organic group (e.
Bisulfide is usually technical/scientific in register.
Bisulfide: in British English it is pronounced /ˌbaɪˈsʌl.faɪd/, and in American English it is pronounced /ˌbaɪˈsʌl.faɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of the prefix 'bi-' meaning 'two' (as in two hydrogen atoms originally in H₂S) and 'sulfide' for sulfur. It's the 'half-neutralized' version of hydrogen sulfide (H₂S), where one H is replaced.
Conceptual Metaphor
Often conceptualised as a 'chemical tool' or 'reagent' in industrial processes, or as a 'contaminant' in environmental contexts.
Practice
Quiz
Which of the following is the most accurate synonym for 'sodium bisulfide' in modern chemical nomenclature?