황혈소다

1.458 at 77 °F (USCG, 1999) - Denser than water; will sink

1.46

1.458 @25 °C

Solubility (% in water): 10.2% @ 1 °C; 14.7% @ 17 °C; 17.6% @ 25 °C; 28.1% @ 53 °C; 39% @ 85 °C; 39.7% @ 96.6 °C /Calculated as anhydrous/

Pale yellow, monoclinic crystals; practically insol in most organic solvents; becomes anhydrous @ 81.5 °C; decomp 435 °C, forming sodium cyanide, iron, carbon and nitrogen /decahydrate/

WHEN HEATED TO DECOMP OR ON CONTACT WITH ACID OR ACID FUMES, THEY EMIT HIGHLY TOXIC FUMES OF CYANIDES. /FERROCYANIDES/

ACID, BASIC OR NEUTRAL SOLN OF FERROCYANIDES LIBERATE HYDROCYANIC ACID UPON STRONG IRRADIATION. /FERROCYANIDES/

Sodium ferrocyanide is an odorless yellow solid. Sinks and mixes with water. (USCG, 1999)

Yellow crystals or crystalline powder

Decahydrate: Pale yellow slightly efflorescent solid; [Merck Index] Yellowish crystals; [MSDSonline]

This chemical does not meet GHS hazard criteria for 79.4% (239 of 301) of all reports.

Warning

H302+H312 (13%): Harmful if swallowed or in contact with skin [Warning Acute toxicity, oral; acute toxicity, dermal]

P264, P270, P273, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 301 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Chemical: Ferrate(4-), hexakis(cyano-C)-, tetrasodium, (OC-6-11)-

Regulation (EC) No 1333/2008 (amended)

REACH registered substance: Tetrasodium hexacyanoferrate (EC: 237-081-9)

Sodium ferrocyanide: Does not have an individual approval but may be used under an appropriate group standard

Ferrocyanide complexes are stable and practically nontoxic because of the strong bonding between iron and cyanide. Cyanide ions may be formed slowly when the chemical is irradiated with UV light. [Ullmann] Solutions may produce hydrogen cyanide on prolonged exposure to sunlight; [Merck Index] Aqueous solutions form hydrogen cyanide when exposed to light; May cause irritation; [MSDSonline]

Yellow prussiate of soda (sodium ferrocyanide decahydrate ...) may be safely used as an anticaking agent in salt for animal consumption at a level not to exceed 13 ppm. The additive contains a minimum of 99.0% by weight of sodium ferrocyanide decahydrate. /Sodium ferrocyanide decahydrate/

The food additive yellow prussiate of soda (sodium ferrocyanide decahydrate ...) contains a minimum of 99% by weight of sodium ferrocyanide decahydrate. The additive is used or intended for use as an anticaking agent in salt and as an adjuvant in the production of dendritic crystals of salt in an amount needed to produce its intended effect but not in excess of 13 ppm calculated as anhydrous sodium ferrocyanide. /Sodium ferrocyanide decahydrate/

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.

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

4.8 [mg/m3]

53 [mg/m3]

320 [mg/m3]

U.S. Bureau of Mines respirator for excessive dustiness; safety goggles. (USCG, 1999)

US BUREAU OF MINES RESPIRATOR FOR EXCESSIVE DUSTINESS; SAFETY GOGGLES

Antidotes to cyanide poisoning include hydroxocobalamin and sodium nitrite, which release the cyanide from the cytochrome system, and rhodanase, which is an enzyme occurring naturally in mammals that combines serum cyanide with thiosulfate, producing comparatively harmless thiocyanate. Oxygen therapy can also be administered. (L97)

Exposure to high levels of cyanide for a short time harms the brain and heart and can even cause coma, seizures, apnea, cardiac arrest and death. Chronic inhalation of cyanide causes breathing difficulties, chest pain, vomiting, blood changes, headaches, and enlargement of the thyroid gland. Skin contact with cyanide salts can irritate and produce sores. (L96, L97)

Cyanide is an inhibitor of cytochrome c oxidase in the fourth complex of the electron transport chain (found in the membrane of the mitochondria of eukaryotic cells). It complexes with the ferric iron atom in this enzyme. The binding of cyanide to this cytochrome prevents transport of electrons from cytochrome c oxidase to oxygen. As a result, the electron transport chain is disrupted and the cell can no longer aerobically produce ATP for energy. Tissues that mainly depend on aerobic respiration, such as the central nervous system and the heart, are particularly affected. Cyanide is also known produce some of its toxic effects by binding to catalase, glutathione peroxidase, methemoglobin, hydroxocobalamin, phosphatase, tyrosinase, ascorbic acid oxidase, xanthine oxidase, succinic dehydrogenase, and Cu/Zn superoxide dismutase. Cyanide binds to the ferric ion of methemoglobin to form inactive cyanmethemoglobin. (L97)

SEVERAL G...HAVE BEEN SWALLOWED REPEATEDLY BY WOULD-BE SUICIDES WITHOUT APPARENT ILL-EFFECT.

BECAUSE OF STRONG CHEMICAL BONDAGE BETWEEEN THE CYANIDE GROUP & THE IRON, FERROCYANIDES HAVE A LOW ORDER OF TOXICITY. /FERROCYANIDES/

SUMMARY TOXICITY STATEMENT; ACUTE... FERROCYANIDES AS SUCH ARE OF LOW ORDER OF TOXICITY. LOW= CAUSES READILY REVERSIBLE TISSUE CHANGES WHICH DISAPPEAR AFTER EXPOSURE STOPS. CAUSES SOME DISCOMFORT. /FERROCYANIDES/

Yellow prussiate of soda (sodium ferrocyanide decahydrate ...) may be safely used as an anticaking agent in salt for animal consumption at a level not to exceed 13 ppm. The additive contains a minimum of 99.0% by weight of sodium ferrocyanide decahydrate. /Sodium ferrocyanide decahydrate/

The food additive yellow prussiate of soda (sodium ferrocyanide decahydrate ...) contains a minimum of 99% by weight of sodium ferrocyanide decahydrate. The additive is used or intended for use as an anticaking agent in salt and as an adjuvant in the production of dendritic crystals of salt in an amount needed to produce its intended effect but not in excess of 13 ppm calculated as anhydrous sodium ferrocyanide. /Sodium ferrocyanide decahydrate/

Cyanide is rapidly alsorbed through oral, inhalation, and dermal routes and distributed throughout the body. Cyanide is mainly metabolized into thiocyanate by either rhodanese or 3-mercaptopyruvate sulfur transferase. Cyanide metabolites are excreted in the urine. (L96)

Used in ore flotation, photography (bleaching, toning, and fixing), pickling baths, blue pigments and dyes, blue print paper, metallurgy, and tanning; Also used as a polymerization catalyst, a rock salt anti-caking agent, a peptizing agent in rubber, and an arc stabilizer in welding rod coatings; [HSDB] Used as an anti-caking agent for food; [Merck Index]

Welding [Category: Weld]

In ore flotation; in photography for bleaching, toning and fixing; emulsion polymerization catalyst; to prevent caking of rock salt

Additive to pickling baths; peptizing agent in rubber; arc stabilizer in welding rods coatings

Mfr of sodium ferricyanide; blue pigments; blue print paper; metallurgy; tanning; dyes; anticaking agent for sodium chloride /Decahydrate/

Sodium ferrocyanide is added to road and food grade salt as an anticaking agent, and is also used in photography and in the pigment Prussian blue. (L562)

Food additives

Food Additives -> ANTICAKING_AGENT -> JECFA Functional Classes

Food Additives -> ANTICAKING_AGENT -> JECFA Functional Classes

Food Additives -> ANTICAKING_AGENT -> JECFA Functional Classes

Ferrate(4-), hexakis(cyano-.kappa.C)-, sodium (1:4), (OC-6-11)-: ACTIVE

Addn of sodium ferrocyanide soln to slightly acidic soln of iron salts causes pptn of insol prussian blue (ferric ferrocyanide), Fe4[Fe(CN)6)]3. Sodium ferrocyanide forms gels with heavy metals in general.