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Potassium ferrocyanide trihyrate, also known as potassium ferrocyanide (trihydrate), is an inorganic compound with a wide range of industrial and application fields. The appearance is a yellow monoclinic crystal, soluble in water and acetone, but insoluble in ethanol, ether, methyl acetate, and liquid ammonia. It is sensitive to light and humidity and easily deteriorates in air. Its solution is prone to deterioration in light and air, so it needs to be sealed and stored away from light. It is used to form Prussian blue and to detect metal ions and proteins such as iron, copper, zinc, palladium, silver, osmium, etc.
In medical testing, it is used for the analysis of biological samples such as urine. As an oxidizing agent for printing and dyeing, it is used in the manufacture of pigments, paints, inks, etc. It is also used to manufacture chemicals such as potassium cyanide and explosives. Plays a role in processes such as steel heat treatment, lithography, and carving. Its food additive grade products are mainly used as anti caking agents for salt, preventing salt from clumping and maintaining its loose state.
Additional information of chemical compound:
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Chemical Formula |
C6H6FeK4N6O3 |
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Exact Mass |
421.84 |
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Molecular Weight |
422.39 |
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m/z |
421.84(100.0%),423.84(28.9%),422.84(6.5%),419.84(6.4%), 425.84(3.1%),422.84(2.3%),422.84(2.2%),424.84(1.9%),421.84(1.8%) |
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Elemental Analysis |
C, 17.06; H, 1.43; Fe, 13.22; K, 37.03; N, 19.90; O, 11.36 |
|
Melting point |
70℃(lit.) |
|
Density |
1.85 |
|
Storage conditions |
Store at +5℃ to +30℃. |
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Potassium ferrocyanide trihyrate, commonly known as potassium ferrocyanide, is an important inorganic compound. It has a wide range of applications in multiple fields, and the following is a detailed explanation of its uses:
Application of chemical reagents
Metal ion detection and analysis
One of the most common uses of potassium ferrocyanide trihydrate in chemical analysis is as a detection reagent for iron ions. When potassium ferrocyanide trihydrate is mixed with iron ions under appropriate conditions, a deep blue precipitate - Prussian blue - is generated. This reaction has high selectivity and sensitivity, and is therefore widely used in various fields such as water quality monitoring, environmental monitoring, and food testing.
In water quality monitoring, the level and type of water pollution can be determined by detecting the content of iron ions in the water. For example, in groundwater pollution monitoring, if an abnormal increase in iron ion content is detected, it may indicate the presence of heavy metal pollution or organic pollution in groundwater. At this point, using potassium ferrocyanide trihydrate for iron ion detection can quickly and accurately determine the pollution status of water quality.
In environmental monitoring, potassium ferrocyanide trihydrate is also used to detect the iron ion content in the atmosphere, soil, and other environments. By regularly monitoring the changes in iron ion content in the environment, the degree and trend of environmental pollution can be evaluated, providing scientific basis for environmental protection. In addition to iron ions, potassium ferrocyanide trihydrate can also be used to detect other metal ions, such as copper ions, zinc ions, palladium ions, silver ions, osmium ions, etc.
These metal ions react with potassium ferrocyanide trihydrate to form precipitates or complexes of different colors, which can be determined by observing color changes or conducting further analysis to determine the type and content of metal ions. For example, in the detection of copper ions, potassium ferrocyanide trihydrate can react with copper ions to form a deep blue complex, which has high selectivity and sensitivity, and is therefore widely used for quantitative and qualitative analysis of copper ions.
Formation of Prussian Blue and Its Related Applications
Prussian blue is a compound with unique color and chemical properties, and its formation mechanism involves coordination between iron ions and cyanide ions. When potassium ferrocyanide trihydrate is mixed with potassium ferrocyanide under appropriate conditions, iron ions will coordinate with cyanide ions to form Prussian blue complexes. The formation process of Prussian blue is influenced by various factors, such as reactant concentration, temperature, pH value, etc.
By adjusting these factors, the formation rate and yield of Prussian blue can be controlled to meet the demand for Prussian blue in different fields. Prussian blue has a wide range of applications in the field of chemical reagents. For example, in the dye industry, Prussian blue can be used as an important blue dye raw material for manufacturing various blue textiles and leather products. In the pigment industry, Prussian blue can be used as an important blue pigment raw material for manufacturing various blue coatings, inks, plastics, etc.
In addition, Prussian blue can also be used to prepare certain special chemical reagents and catalysts. For example, in organic synthesis reactions, Prussian blue can serve as a catalyst or ligand for certain reactions, promoting the progress of the reaction and increasing the yield.
As an indicator in titration analysis
Titration analysis is a commonly used chemical analysis method, which involves titrating a solution of known concentration (standard solution) into another solution of unknown concentration (test solution) until the reaction is complete. During the titration process, the endpoint of the reaction and the concentration of the test solution are determined by observing the color change of the indicator or performing potentiometric titration. Potassium ferrocyanide trihydrate can be used as an indicator in certain titration analyses.
For example, in the titration analysis of iron ions, potassium ferrocyanide trihydrate can be used as an indicator. When the iron ions react completely with the titrant in the standard solution, the added potassium ferrocyanide trihydrate will react with the remaining titrant to form Prussian blue precipitate, indicating the endpoint of the reaction. In addition, potassium ferrocyanide trihydrate can also be used for titration analysis of other metal ions, such as copper ions, zinc ions, etc.
Industrial applications
Potassium ferrocyanide trihyrate plays an important role in the pigment manufacturing industry. It can serve as a raw material or intermediate for certain pigments and participate in the synthesis process of pigments. By reacting with other compounds, pigment products with specific colors and properties can be prepared. These pigments are widely used in coatings, inks, plastics, rubber and other fields, providing rich colors and decorative effects for products.
In the printing and dyeing industry, potassium ferrocyanide trihydrate is commonly used as an oxidizing agent for printing and dyeing.
It can help dyes better adhere to fibers, improving the fastness and vividness of dyeing. Meanwhile, it can also improve the solubility and dispersibility of dyes, making the dyeing process more uniform and stable. In addition, potassium ferrocyanide trihydrate can also be used in bleaching and decolorization processes to remove impurities and color spots on fibers, improving the whiteness and purity of products.
Steel and metal processing industry
In the steel industry, potassium ferrocyanide trihydrate is commonly used in the heat treatment process of steel. It can be used as an additive for carburizing or nitriding agents, promoting the diffusion and penetration of carbon or nitrogen elements into the interior of steel, and improving the hardness and wear resistance of steel. At the same time, it can also improve the microstructure and properties of steel, making it have better mechanical and processing properties.
In addition to its application in the steel industry, potassium ferrocyanide trihydrate can also be used for surface treatment of other metals. It can be used as an additive in electroplating or chemical plating solutions to improve the adhesion and corrosion resistance of the coating. At the same time, it can also be used in metal polishing and cleaning processes to remove oxides and impurities on the metal surface, improve the glossiness and purity of the metal.
Explosives and Fireworks Industry
Potassium ferrocyanide trihydrate also has important applications in the explosive manufacturing industry. It can be used as a raw material or additive for explosives, participating in the synthesis and formulation design of explosives. By reacting with other compounds, explosive products with specific explosive properties and uses can be prepared. These explosives are widely used in mining, building demolition, military and other fields, providing strong support for various engineering tasks.
In addition to its application in the manufacture of explosives, potassium ferrocyanide trihydrate can also be used in the production process of fireworks. It can be used as a coloring agent or smoke generator for fireworks, providing rich colors and smoke effects for fireworks. Meanwhile, it can also be used in the formulation design and process improvement of fireworks to enhance their performance and safety.
Other industrial applications
In the electronics industry, Potassium ferrocyanide trihyrate can be used as an additive or modifier for certain electronic materials. By reacting or mixing with other compounds, the performance and application effectiveness of electronic materials can be improved. For example, in the fields of electronic ceramics, electronic pastes, etc., potassium ferrocyanide trihydrate can be used as an additive to improve the conductivity, thermal stability, and mechanical properties of electronic materials.
With the improvement of environmental awareness and the strengthening of environmental regulations, the application of potassium ferrocyanide trihydrate in the environmental protection industry is gradually increasing. It can be used in fields such as wastewater treatment and air purification to remove pollutants such as heavy metal ions and organic matter in water, and reduce the concentration of harmful gases in the air. By combining with other environmental protection technologies and equipment, effective treatment and recycling of wastewater and exhaust gas can be achieved.
FAQ
What is potassium ferrocyanide trihydrate used for?
Potassium Ferrocyanide, Trihydrate, Crystal, Reagent, ACS is an inorganic compound that is a salt with a light yellow tint. Mainly used as an anti-caking agent in both road and table salt. It has several other niche uses and within the laboratory to determine potassium permanganate concentration levels.
What is K4 Fe CN 6 called?
Potassium Ferrocyanide Structure – K 4 Fe(CN) 6
"Potassium ferrocyanide is an inorganic compound with the chemical formula K4Fe(CN)6. Potassium ferrocyanide is also known as yellow potash prussiate, a yellow crystal." It was made with either wool or horn clippings stirring hot potassium carbonate with an iron rod.
Is potassium ferrocyanide safe?
Potassium ferrocyanide is apparently benign and does not decompose to cyanide in the body. Inhalation: May cause irritation to the respiratory tract. Symptoms may include coughing and shortness of breath. Ingestion: Large doses may cause gastrointestinal upset with nausea, vomiting, diarrhea, and possible cramping.
What is potassium ferrocyanide?
Potassium ferrocyanide is the inorganic compound with formula K4[Fe(CN)6]·3H2O. It is the potassium salt of the coordination complex [Fe(CN)6]4−. This salt forms lemon-yellow monoclinic crystals. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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