13601-19-9 Usage
Description
Sodium ferrocyanide, also known as yellow prussiate of soda, is a yellow crystalline salt with the chemical formula Na4Fe(CN)6. It is an odorless, solid substance that is soluble in water and insoluble in alcohol. Sodium ferrocyanide is the sodium salt of the coordination compound of ferrocyanide anion [Fe(CN)6]4-. Despite containing cyanide ligands, it has low toxicity and is less toxic than many other cyanide salts due to its tendency not to release free cyanide. However,
Uses
1. Used in the Food Industry:
Sodium ferrocyanide is used as an anticaking agent and crystallizing agent for salt. It helps generate lagged and bulky crystals that resist caking, improving the texture and quality of the salt.
2. Used in the Chemical Industry:
Sodium ferrocyanide is used in the manufacture of sodium ferricyanide, blue pigments, and blueprint paper. It also serves as an anticaking agent for salt and is utilized in ore flotation and pickling metals.
3. Used in the Mining Industry:
In the mining sector, sodium ferrocyanide is employed as a flotation agent, aiding in the separation of valuable minerals from waste materials.
4. Used in the Polymer Industry:
Sodium ferrocyanide functions as a polymerization catalyst, promoting the formation of polymers and enhancing the efficiency of the process.
5. Used in the Photography Industry:
As a photographic fixing agent, sodium ferrocyanide helps stabilize and preserve photographic images, ensuring their longevity.
6. Used in the Energy Storage Industry:
Sodium hexacyanoferrate(II) decahydrate, a form of sodium ferrocyanide, is being researched and used as a potential cathode material for sodium-ion batteries, offering a promising avenue for energy storage applications.
Production
Sodium ferrocyanide is produced industrially from hydrogen cyanide, ferrous chloride, and calcium hydroxide, the combination of which affords Ca2[Fe(CN)6] ? 11H2O. A solution of this salt is then treated with sodium salts to precipitate the mixed calcium-sodium salt CaNa2[Fe(CN)6], which in turn is treated with sodium carbonate to give the tetrasodium salt.
Storage
Hygroscopic, -20°C Freezer, Under inert atmosphere
Reactivity
Sodium ferrocyanide is a coordination compound of iron. The cyanide ligands are tightly bound to the iron, so it is not as toxic as simple inorganic cyanide salts. However, this compound can release hydrogen cyanide gas upon reaction with acids.
Air & Water Reactions
Water soluble.
Reactivity Profile
Sodium ferrocyanide has weak oxidizing or reducing powers. Redox reactions can however still occur. The majority of compounds in this class are slightly soluble or insoluble in water. If soluble in water, then the solutions are usually neither strongly acidic nor strongly basic. These compounds are not water-reactive.
Health Hazard
None recorded.
Flammability and Explosibility
Nonflammable
Safety Profile
When heated to decomposition emits toxic fumes of CN-.
Purification Methods
Crystallise it from hot water (0.7mL/g), until free of ferricyanide as shown by the absence of formation of Prussian Blue colour with ferrous sulfate solution.
Check Digit Verification of cas no
The CAS Registry Mumber 13601-19-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,0 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 13601-19:
(7*1)+(6*3)+(5*6)+(4*0)+(3*1)+(2*1)+(1*9)=69
69 % 10 = 9
So 13601-19-9 is a valid CAS Registry Number.
InChI:InChI=1/12CN.2Fe.4Na/c12*1-2;;;;;;/q;;;;;;;;;;;;2*-2;4*+1/r2C6FeN6.4Na/c2*8-1-7(2-9,3-10,4-11,5-12)6-13;;;;/q2*-2;4*+1
