ferricyanide
C2Technical
Definition
Meaning
The anion Fe(CN)₆³⁻ or a salt containing it.
A chemical compound used primarily as an oxidizing agent in analytical chemistry and in certain industrial processes such as blueprinting.
Linguistics
Semantic Notes
The term is highly specific to chemistry. The 'ferri-' prefix indicates the iron is in the +3 oxidation state. It's often contrasted with 'ferrocyanide' (Fe(CN)₆⁴⁻).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage.
Connotations
Neutral, purely scientific in both varieties.
Frequency
Equally rare and technical in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[Chemical] was detected using ferricyanide.The reagent contains ferricyanide.Vocabulary
Synonyms
Neutral
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in chemistry and materials science research papers.
Everyday
Not used.
Technical
Used in lab protocols, analytical chemistry, electrochemistry, and photographic processes.
Examples
By Part of Speech
adjective
British English
- The ferricyanide concentration was measured.
- A ferricyanide reagent was prepared.
American English
- The ferricyanide solution turned blue.
- Ferricyanide ions are strong oxidizers.
Examples
By CEFR Level
- Potassium ferricyanide is used in some photographic processes.
- The test involves adding a ferricyanide solution to the sample.
Learning
Memory Aids
Mnemonic
Think: FERRIC (iron in +3 state) + CYANIDE (CN group). It's the 'ferric' version of a cyanide complex.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'цианид' (cyanide, a generic toxic salt). The Russian equivalent is 'феррицианид'.
Common Mistakes
- Misspelling as 'ferrocyanide' (a different compound).
- Pronouncing it as 'ferry-SIGH-uh-nide' instead of the standard 'ferri-SIGH-uh-nide'.
Practice
Quiz
What does the 'ferri-' prefix in 'ferricyanide' indicate?
FAQ
Frequently Asked Questions
While it contains cyanide groups, in the complexed ferricyanide ion they are tightly bound to iron, making most ferricyanide salts much less toxic than free cyanide salts. However, they should still be handled with care as they can decompose under certain conditions.
Its primary uses are as an oxidizing agent in analytical chemistry, in electroplating baths, in blueprint paper (ferrocyanate paper), and in some photographic and etching processes.
Ferricyanide contains iron in the +3 oxidation state (Fe³⁺), while ferrocyanide contains iron in the +2 oxidation state (Fe²⁺). Ferricyanide is an oxidizing agent, ferrocyanide is a reducing agent.
In British English: /ˌferɪˈsaɪənaɪd/ (ferri-SIGH-uh-nide). In American English: /ˌfɛrəˈsaɪəˌnaɪd/ (fair-uh-SIGH-uh-nide). The primary stress is on the third syllable.