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Sodium Ferrocyanide Decahydrate is produced industrially from hydrogen cyanide, ferrous chloride, and calcium hydroxide, the combination of which affords Ca2[Fe(CN)6]·11 H2O.
Sodium Ferrocyanide Decahydrate can be easily weathered in the air at a temperature between 50-60 ℃ as the crystal will quickly lose the water during crystallization.
Sodium Ferrocyanide Decahydrate is prepared on an industrial scale by reacting hydrogen cyanide with ferrous chloride and calcium hydroxide with heat.
CAS Number: 14434-22-1
Molecular Formula: C6H2FeN6NaO-3
Molecular Weight: 252.96
EINECS Number: 680-419-9
Synonyms: CG0CLR485X, SODIUM FERROCYANIDE DECAHYDRATE [MI], Ferrate(4-), hexakis(cyano-kappaC)-, sodium, hydrate (1:4:10), (OC-6-11)-, Ferrate(4-), hexacyano-, tetrasodium, decahydrate, SODIUM HEXACYANOFERRATE (Na4(Fe(CN)6)), DECAHYDRATE, FERRATE(4-), HEXAKIS(CYANO-.KAPPA.C)-, SODIUM, HYDRATE (1:4:10), (OC-6-11)-, 680-419-9, 14434-22-1, FERRATE(4-), HEXAKIS(CYANO-C)-, TETRASODIUM, DECAHYDRATE, (OC-6-11)-, RefChem:887534, SODIUM FERROCYANIDE DECAHYDRATE, TETRASODIUM HEXACYANOFERRATE(4-) DECAHYDRATE, Tetrasodium hexakis(cyano-C)ferrate(4-) decahydrate (OC-6-11)-, Sodium ferrocyanide decahydrate, Sodium ferrocyanide, Sodium hexacyanoferrate (Na4(Fe(CN)6)) decahydrate, Tetrasodium hexacyanoferrate(4-) decahydrate, Yellow prussiate of soda, C6H20FeN6Na4O10, DTXSID80932294, JFSUDVTVQZUDOP-UHFFFAOYSA-N, AKOS025243326, ferrous;tetrasodium;hexacyanide;decahydrate, Iron(2+) sodium cyanide--water (1/4/6/10), Q27275448, Ferrate(4-), hexakis(cyano-|EC)-, sodium, hydrate (1:4:10), (OC-6-11)-, SODIUM HEXACYANOFERRATE(II)-10-HYDRATE;SODIUM HEXACYANOFERRATE(II) DECAHYDRATE;SODIUM FERROCYANIDE DECAHYDRATE;YELLOW PRUSSIATE OF SODA DECAHYDRATE;SODIUM HEXACYANOFERRATE(II)-10-HYDRATE E XTRA PURE;Sodium ferrocyanide;Sodium hexacyanoferrate(II) decahydrate, synthesis grade;SodiuM ferrocyanide decahydrate >=99%
Sodium Ferrocyanide Decahydrate is a sodium salt of a coordination compound with formula [Fe(CN)6]4−.
Sodium Ferrocyanide Decahydrate is a yellow crystalline solid, soluble in water and alcohol.
The yellow color of the compound comes from the ferrocyanide anion.
The solution obtained from this reaction is treated with sodium salts and later with sodium carbonate to create sodium ferrocyanide after crystallization.
Sodium Ferrocyanide Decahydrate is the sodium salt of the coordination compound of formula [Fe(CN)6]4−.
In its hydrous form, Na4Fe(CN)6·H2O (sodium ferrocyanide decahydrate), it is sometimes known as yellow prussiate of soda.
Sodium Ferrocyanide Decahydrate is a yellow crystalline solid that is soluble in water and insoluble in alcohol.
The yellow color is the color of ferrocyanide anion.
Despite the presence of the cyanide ligands, Sodium Ferrocyanide Decahydrate has low toxicity (acceptable daily intake 0–0.025 mg/kg body weight).
The ferrocyanides are less toxic than many salts of cyanide, because they tend not to release free cyanide.
However, like all ferrocyanide salt solutions, addition of an acid or exposure to UV light can result in the production of hydrogen cyanide gas, which is extremely toxic.
Sodium Ferrocyanide Decahydrate, with the chemical formula Na₄[Fe(CN)₆]·10H₂O, is an inorganic coordination compound that consists of a central iron(II) ion surrounded by six cyanide ligands, which together form a stable hexacyanoferrate(II) complex, balanced by four sodium cations and ten molecules of water of crystallization.
In its solid form, Sodium Ferrocyanide Decahydrate typically appears as a yellow crystalline material that is odorless and stable under normal handling conditions, which is why it is also commonly known by the traditional name yellow prussiate of soda.
From a chemical standpoint, sodium ferrocyanide decahydrate is remarkably stable compared to free cyanide salts, because the cyanide groups are strongly bound to the iron atom in the hexacyanoferrate complex, which prevents them from readily releasing toxic free cyanide ions under ordinary conditions.
This stability makes the compound useful and relatively safe for certain industrial and food-related applications, even though its name may suggest otherwise due to the association with cyanide chemistry.
Sodium Ferrocyanide Decahydrate is the raw material for the manufacture of blue pigment, used in paints, coatings and inks.
Sodium Ferrocyanide Decahydrate is Used in the printing and dyeing industry to make blue print drawings.
The pharmaceutical industry is used as a de-ferrous agent in the production of pharmaceuticals.
Also Sodium Ferrocyanide Decahydrate is used for steel carburizing, tanning, metal surface anti-corrosion, as well as the preparation of red blood
salt.
Sodium Ferrocyanide Decahydrate is also known by its European approved food additive number : E535.
Moreover, sodiumferrocyanide is also called Tetrasodium hexacyanoferrate or yellow prussiate of soda (YPS), with the formula Na4[Fe(CN)6].10H2O
Sodium Ferrocyanide Decahydrate is the sodium salt of the coordination compound of formula [Fe(CN)6]4−.
In its hydrous form, Na4Fe(CN)6.10H2O, it is sometimes known as yellow prussiate of soda.
Melting point: 82 °C (-10H2O)
Density: 1.458 g/cm3
RTECS: LJ8145000
Refractive index: 1.530
Flash point: 435 °C
Storage temp.: Hygroscopic, -20 °C Freezer, Under inert atmosphere
Solubility: Methanol (Slightly), Water (Heated)
Form: Powder
Color: Light yellow
Specific Gravity: 1.458
Odor: Odorless
Water Solubility: Soluble
Decomposition: 435 °C
Exposure limits (ACGIH): TWA 1 mg/m3
Exposure limits (NIOSH): IDLH 25 mg/m3; TWA 1 mg/m3
Stability: Stable. Incompatible with strong oxidizing agents.
InChIKey: KJSGVRTUMXJODL-UHFFFAOYSA-N
LogP: -0.250 (est)
Sodium Ferrocyanide Decahydrate also known as yellow prussiate of soda with the chemical formula Na4Fe(CN)6·10H2O.
It is a cyanide salt used as an anticaking agent in table salts to keep them free flowing and with the European food additive number E535.
Given that it is a cyanide salt, you may be surprised why this ingredient can be in salt and is it really safe.
Sodium Ferrocyanide Decahydrate 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]2, which in turn is treated with sodium carbonate to give the tetrasodium salt.
Sodium Ferrocyanide Decahydrate is a synthetic compound that can be commercially produced by the reaction between sodium cyanide and ferrous sulfate in aqueous medium with heat condition as the following chemical equation indicates: 6NaCN + FeSO4 + Heat → Na4Fe(CN)6 + Na2SO4
Sodium ferrocyanide decahydrate can be then obtained after the process of crystallization.
Sodium Ferrocyanide Decahydrate can also be made from the reaction among calcium cyanide, iron(II) sulfate, and sodium carbonate.
Sodium Ferrocyanide Decahydrate is the cyanide complex and its major purposes in food is as an anticaking agent in salts (table salt, sea salt, iodized and non-iodized salt) for human consumption.
It is vegan and gluten free.
The surface of crystals of table salt is easy to dissolve after absorbing moisture in air with high humidity, and then recrystallization occurs after water evaporation. Finally, caking, lumping, or aggregation occurs.
Some kinds of salt added with small amounts of Sodium Ferrocyanide Decahydrate to prevent such caking (or clumping) and by reducing the amount of recrystallization through decreasing the solubility of sodium chloride in water.
Sodium Ferrocyanide Decahydrate is the sodium salt of the coordination compound of formula [Fe(CN)6]4−.
In its hydrous form, Na4Fe(CN)6 • 10 H2O (sodium ferrocyanide decahydrate), Sodium ferrocyanide is sometimes known as yellow prussiate of soda.
Sodium Ferrocyanide Decahydrate is a yellow crystalline solid that is soluble in water and insoluble in alcohol.
The yellow color is the color of ferrocyanide anion.
Despite the presence of the cyanide ligands, sodium ferrocyanide has low toxicity (acceptable daily intake 0–0.025 mg/kg body weight).
The ferrocyanides are less toxic than many salts of cyanide, because they tend not to release free cyanide.
However, like all ferrocyanide salt solutions, addition of an acid can result in the production of hydrogen cyanide gas, which is extremely toxic.
Sodium Ferrocyanide Decahydrate is an odorless yellow solid.
Sodium Ferrocyanide Decahydrate sinks and mixes with water.
Sodium Ferrocyanide Decahydrate is dry powder solid.
Sodium Ferrocyanide Decahydrate is Decahydrate.
Sodium Ferrocyanide Decahydrate is Pale yellow slightly efflorescent solid.
Sodium Ferrocyanide Decahydrate is Yellowish crystals.
Sodium Ferrocyanide Decahydrate also known as yellow prussiate of soda with the chemical formula Na4Fe(CN)6·10H2O.
Sodium Ferrocyanide Decahydrate is a cyanide salt used as an anticaking agent in table salts to keep them free flowing and with the European food additive number E535.
Sodium Ferrocyanide Decahydrate is an anticaking agent.
One of the most well-known uses of sodium ferrocyanide decahydrate is as an anticaking agent in table salt and road salt, where it is added in very small, regulated amounts (often identified as food additive E535) to prevent clumping by absorbing excess moisture and keeping salt grains free-flowing.
In this role, it helps ensure that salt can be poured easily and measured accurately, especially in humid conditions where clumping would otherwise be a problem.
Because of its stability, it does not release free cyanide under normal storage and food-use conditions, and regulatory agencies such as the U.S. Food and Drug Administration and the European Food Safety Authority have approved it for controlled use.
In addition to its food-related application, Sodium Ferrocyanide Decahydrate has industrial uses, such as in the production of pigments like Prussian blue, in metal surface treatment processes, and in the photographic industry, where its coordination chemistry makes it a useful precursor to other iron-cyanide complexes.
Sodium Ferrocyanide Decahydrate has also been used in certain chemical analyses, since ferrocyanides can form intensely colored precipitates with some metal ions, allowing for qualitative testing in laboratories.
Uses:
Sodium Ferrocyanide Decahydrate is being used and studied as a possible cathode material for sodium ion batteries.
Sodium Ferrocyanide Decahydrate, decahydrate, ≥99% Cas 14434-22-1 - used in producing iron blue and potassium ferricyanide, surface corrosion protecting for tannage and metal, carburization treating for carbon steel, removing iron in pharmaceutical producing.
When combined with a Fe(III) salt, it converts to a deep blue pigment called Prussian blue, Fe3+4[Fe2+(CN)6]3.
Sodium Ferrocyanide Decahydrate is used as a stabilizer for the coating on welding rods.
In the petroleum industry, it is used for removal of mercaptans.
In the EU, ferrocyanides (E 535–538) were, as of 2018, solely authorized as additives in salt and salt substitutes, where they serve as anticaking agents.
The kidneys are the organ susceptible to ferrocyanide toxicity, but according to the EFSA, ferrocyanides are of no safety concern at the levels at which they are used.
Sodium Ferrocyanide Decahydrate is commonly used as an anti-caking agent in salts and salt substitutes.
Due to contact with atmospheric moisture, table salts can undergo clumping. Adding a certain amount of Sodium Ferrocyanide Decahydrate can prevent this from occurring.
The ferrocyanides are less toxic than many cyanide salts because they tend not to release free cyanide.
The crystals at the surface of table salts are easy to dissolve when exposed to moisture in the environment or during manufacturing.
When this moisture evaporates, recrystallization occurs, which causes caking or lumping.
Small amounts of sodium ferrocyanide can prevent clumping.
In table salt, Sodium Ferrocyanide Decahydrate is typically used at around 20 mg/kg concentrations.
For other food applications, it’s crucial to consult specific guidelines and formulations based on the type of food product and region.
One of the primary uses of Sodium Ferrocyanide Decahydrate is as an anticaking agent in table salt and other granular food products, where it is added in extremely small, regulated quantities to prevent the formation of lumps and ensure that salt flows freely even in humid environments.
In this role, it works by binding trace amounts of moisture, which stabilizes the crystalline structure of the salt and prevents clumping, making it easier for consumers and manufacturers to measure and distribute salt consistently.
Its stability as a hexacyanoferrate complex ensures that it does not release free cyanide ions under normal food storage or cooking conditions, which is why regulatory agencies such as the U.S. Food and Drug Administration (FDA) and the European Food Safety Authority (EFSA) have approved its use in foods under strict limits.
Sodium ferrocyanide decahydrate is also widely used in the industrial production of pigments, most notably Prussian blue, which is a deep blue pigment used in paints, inks, and coatings.
In this context, it reacts with iron salts to form intensely colored complexes that are highly stable and resistant to fading, which makes it valuable in artistic, commercial, and industrial applications.
Sodium Ferrocyanide Decahydrate ’s ability to form stable complexes with other metals also makes it useful in metal surface treatment and electroplating, where it can help create uniform coatings, prevent corrosion, or act as a reagent in certain chemical processes.
In chemical laboratories, sodium ferrocyanide decahydrate is used as a reagent for qualitative and quantitative analysis of metal ions, because it reacts with ions such as iron(III) or copper(II) to form colored precipitates, which can be visually detected or measured.
This property makes it valuable in analytical chemistry for testing water quality, soil composition, and the presence of trace metals in industrial and environmental samples.
Its highly controlled reactivity allows chemists to exploit the strong binding between cyanide ligands and metals without the extreme hazards associated with free cyanide salts.
Safety Profile:
Sodium Ferrocyanide Decahydrate is generally considered to be low in acute toxicity because the cyanide ions are tightly bound to the iron center in the hexacyanoferrate complex, which prevents the release of free cyanide under normal conditions; however, ingestion of extremely large amounts or improper handling could theoretically cause cyanide-related effects, although such cases are rare and unlikely under controlled use in food or industry.
When handled as a fine powdered crystalline solid, sodium ferrocyanide decahydrate can create airborne dust particles that, if inhaled in large quantities, may irritate the respiratory tract, throat, and nasal passages, leading to coughing, sneezing, or mild shortness of breath.
Although it is not a respiratory sensitizer in most cases, repeated occupational exposure without proper ventilation or protective equipment could exacerbate irritation or cause discomfort in sensitive individuals.
