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Potassium Ferrocyanide vs. Potassium Ferricyanide: What's the Difference?

Edited by Huma Saeed || By Sara Rehman || Published on January 16, 2024
Potassium Ferrocyanide is a chemical compound with the formula K₄[Fe(CN)₆]·3H₂O. Potassium Ferricyanide is a chemical compound with the formula K₃[Fe(CN)₆].

Key Differences

Potassium ferrocyanide, a light yellow crystalline compound, is less toxic and stable under normal conditions. Potassium ferricyanide, on the other hand, is a red crystal that is more reactive and oxidizing.
Huma Saeed
Jan 16, 2024
In potassium ferrocyanide, the iron within the compound is in a +2 oxidation state. Conversely, in potassium ferricyanide, iron is in a higher, +3 oxidation state, which contributes to its different properties.
Sara Rehman
Jan 16, 2024
Potassium ferrocyanide is commonly used as a food additive and in the production of wine and citric acid. Potassium ferricyanide finds its primary use in photography and blueprinting due to its light sensitivity.
Sara Rehman
Jan 16, 2024
The chemical structure of potassium ferrocyanide includes ferrous iron coordinated by cyanide ligands. In potassium ferricyanide, ferric iron is surrounded by cyanide groups, giving it a distinct molecular structure.
Sara Rehman
Jan 16, 2024
In laboratory settings, potassium ferrocyanide is often used in the determination of potassium. In contrast, potassium ferricyanide is utilized in redox titrations due to its oxidizing nature.
Harlon Moss
Jan 16, 2024
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Comparison Chart

Chemical Formula

K₄[Fe(CN)₆]·3H₂O
K₃[Fe(CN)₆]
Sara Rehman
Jan 16, 2024

Color

Light Yellow
Red
Sara Rehman
Jan 16, 2024

Iron Oxidation State

+2
+3
Sara Rehman
Jan 16, 2024

Common Uses

Food additive, wine production
Photography, blueprinting
Sara Rehman
Jan 16, 2024

Laboratory Use

Potassium determination
Redox titrations
Huma Saeed
Jan 16, 2024
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Toxicity

Less toxic
More toxic
Harlon Moss
Jan 16, 2024

Stability

Stable under normal conditions
More reactive and oxidizing
Aimie Carlson
Jan 16, 2024

Molecular Structure

Ferrous iron with cyanide ligands
Ferric iron with cyanide ligands
Aimie Carlson
Jan 16, 2024

Potassium Ferrocyanide and Potassium Ferricyanide Definitions

Potassium Ferrocyanide

A compound with the chemical formula K₄[Fe(CN)₆]·3H₂O.
The crystalline structure of potassium ferrocyanide is evident under a microscope.
Sara Rehman
Dec 21, 2023

Potassium Ferricyanide

A chemical used in blueprinting due to its light sensitivity.
Blueprint papers are coated with a solution containing potassium ferricyanide.
Janet White
Dec 21, 2023

Potassium Ferrocyanide

A less toxic and stable cyanide compound.
Potassium ferrocyanide is preferred in food applications due to its lower toxicity.
Sara Rehman
Dec 21, 2023

Potassium Ferricyanide

A red crystalline compound used in photographic processing.
Potassium ferricyanide is key in developing cyanotype photographs.
Sara Rehman
Dec 21, 2023

Potassium Ferrocyanide

A yellow crystalline salt used as a food additive.
Potassium ferrocyanide is added to table salt to prevent caking.
Sara Rehman
Dec 21, 2023

Potassium Ferricyanide

A compound where iron is in the +3 oxidation state.
The +3 oxidation state of iron in potassium ferricyanide contributes to its red color.
Sara Rehman
Dec 21, 2023

Potassium Ferrocyanide

A compound used in the production of wine and citric acid.
Winemakers sometimes use potassium ferrocyanide for removing heavy metals from wine.
Sara Rehman
Dec 21, 2023

Potassium Ferricyanide

An oxidizing agent with the formula K₃[Fe(CN)₆].
In laboratories, potassium ferricyanide is used in redox reactions.
Huma Saeed
Dec 21, 2023

Potassium Ferrocyanide

A chemical used in laboratory analysis.
Scientists use potassium ferrocyanide to determine potassium levels in samples.
Aimie Carlson
Dec 21, 2023

Potassium Ferricyanide

More reactive and toxic compared to its ferrocyanide counterpart.
Due to its toxicity, potassium ferricyanide is handled with extra caution in labs.
Sara Rehman
Dec 21, 2023

FAQs

Is potassium ferricyanide light-sensitive?

Yes, it is sensitive to light, making it useful in photographic processes.
Sara Rehman
Jan 16, 2024

What is the primary use of potassium ferrocyanide?

Used as a food additive and in wine production.
Sara Rehman
Jan 16, 2024

What is the color of potassium ferrocyanide?

It is a light yellow crystalline compound.
Aimie Carlson
Jan 16, 2024

What color is potassium ferricyanide?

It appears as red crystals.
Sara Rehman
Jan 16, 2024

What is a laboratory use of potassium ferricyanide?

Used in redox titrations due to its oxidizing properties.
Harlon Moss
Jan 16, 2024

Can potassium ferrocyanide be used in food?

Yes, it's used as a food additive due to its lower toxicity.
Aimie Carlson
Jan 16, 2024

What is the iron oxidation state in potassium ferricyanide?

Iron is in the +3 oxidation state.
Aimie Carlson
Jan 16, 2024

What is potassium ferricyanide commonly used for?

Primarily in photography and blueprinting.
Huma Saeed
Jan 16, 2024

Are these compounds toxic?

Potassium ferrocyanide is less toxic, while potassium ferricyanide is more toxic.
Sara Rehman
Jan 16, 2024

What is the chemical formula of potassium ferrocyanide?

K₄[Fe(CN)₆]·3H₂O.
Harlon Moss
Jan 16, 2024

What is the chemical formula of potassium ferricyanide?

K₃[Fe(CN)₆].
Sara Rehman
Jan 16, 2024

Is potassium ferricyanide reactive?

Yes, it is more reactive and oxidizing.
Sara Rehman
Jan 16, 2024

Are these compounds environmentally safe?

They should be handled with care and disposed of properly due to potential environmental impacts.
Aimie Carlson
Jan 16, 2024

Can potassium ferrocyanide react with other compounds?

It can react with certain compounds but is generally stable.
Sara Rehman
Jan 16, 2024

What is the iron oxidation state in potassium ferrocyanide?

Iron is in the +2 oxidation state.
Harlon Moss
Jan 16, 2024

Can potassium ferrocyanide be used in wine production?

Yes, it's used to remove heavy metals from wine.
Sara Rehman
Jan 16, 2024

How is potassium ferrocyanide used in laboratories?

For potassium determination and analysis.
Harlon Moss
Jan 16, 2024

Is potassium ferrocyanide stable?

Yes, it's stable under normal conditions.
Janet White
Jan 16, 2024

Is potassium ferricyanide used in cyanotype photography?

Yes, it's a key component in cyanotype photography.
Aimie Carlson
Jan 16, 2024

What precautions are needed when handling potassium ferricyanide?

Protective gear and careful handling due to its toxic and reactive nature.
Janet White
Jan 16, 2024
About Author
Written by
Sara Rehman
Sara Rehman is a seasoned writer and editor with extensive experience at Difference Wiki. Holding a Master's degree in Information Technology, she combines her academic prowess with her passion for writing to deliver insightful and well-researched content.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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