Potassium Hexacyanoferrate(II) Trihydrate

CAS 14459-95-1
Linear Formula: K4Fe(CN)6 • 3H2O
MDL Number: MFCD00167023
EC No.: 237-722-2

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(2N) 99% Potassium Hexacyanoferrate(II) Trihydrate
K-CYFE6-02-C.3HYD Pricing
(3N) 99.9% Potassium Hexacyanoferrate(II) Trihydrate
K-CYFE6-03-C.3HYD Pricing
(4N) 99.99% Potassium Hexacyanoferrate(II) Trihydrate
K-CYFE6-04-C.3HYD Pricing
(5N) 99.999% Potassium Hexacyanoferrate(II) Trihydrate
K-CYFE6-05-C.3HYD Pricing


Compound Formula C6H6FeK4N6O3
Molecular Weight 422.39
Appearance Yellow crystals
Melting Point 70 °C
Boiling Point N/A
Density 1.85 g/cm3
Monoisotopic Mass 421.839902
Exact Mass 421.839902

Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A

View and Print SDS


Date Accessed: 10/22/2016
Date Revised: 05/15/2015


Product Name: Potassium Hexacyanoferrate(II) Trihydrate

Product Number: All applicable American Elements product codes, e.g. K-CYFE6-02-C.3HYD , K-CYFE6-03-C.3HYD , K-CYFE6-04-C.3HYD , K-CYFE6-05-C.3HYD

CAS #: 14459-95-1

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
1093 Broxton Ave. Suite 2000
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America +1 800-424-9300
International +1 703-527-3887


Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
The substance is not classified as hazardous to health or the environment according to the CLP regulation.
Classification according to Directive 67/548/EEC or Directive 1999/45/EC
R52/53: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Information concerning particular hazards for human and environment:
Not applicable
Hazards not otherwise classified
No information known.
Label elements
Labelling according to Regulation (EC) No 1272/2008
Not applicable
Hazard pictograms
Not applicable
Signal word
Not applicable
Hazard statements
Not applicable
WHMIS classification
Not controlled
Classification system
HMIS ratings (scale 0-4)
(Hazardous Materials Identification System)
Health (acute effects) = 1
Flammability = 1
Physical Hazard = 1
Other hazards
Results of PBT and vPvB assessment
Not applicable.
Not applicable.


Chemical characterization: Substances
CAS# Description:
14459-95-1 Potassium hexacyanoferrate(II) trihydrate
Identification number(s):
EC number:


Description of first aid measures
After inhalation
Supply fresh air. If required, provide artificial respiration. Keep patient warm.
Seek immediate medical advice.
After skin contact
Immediately wash with water and soap and rinse thoroughly.
Seek immediate medical advice.
After eye contact
Rinse opened eye for several minutes under running water. Then consult a doctor.
After swallowing
Seek medical treatment.
Information for doctor
Most important symptoms and effects, both acute and delayed
No further relevant information available.
Indication of any immediate medical attention and special treatment needed
No further relevant information available.


Extinguishing media
Suitable extinguishing agents
Carbon dioxide, extinguishing powder or water spray. Fight larger fires with water spray or alcohol resistant foam.
Special hazards arising from the substance or mixture
If this product is involved in a fire, the following can be released:
Carbon monoxide and carbon dioxide
Nitrogen oxides (NOx)
Metal oxide fume
Potassium oxide
Advice for firefighters
Protective equipment:
Wear self-contained respirator.
Wear fully protective impervious suit.


Personal precautions, protective equipment and emergency procedures
Wear protective equipment. Keep unprotected persons away.
Ensure adequate ventilation
Environmental precautions:
Do not allow material to be released to the environment without proper governmental permits.
Do not allow product to reach sewage system or any water course.
Do not allow to penetrate the ground/soil.
Methods and material for containment and cleaning up:
Pick up mechanically.
Prevention of secondary hazards:
No special measures required.
Reference to other sections
See Section 7 for information on safe handling
See Section 8 for information on personal protection equipment.
See Section 13 for disposal information.


Precautions for safe handling
Keep container tightly sealed.
Store in cool, dry place in tightly closed containers.
Ensure good ventilation at the workplace.
Information about protection against explosions and fires:
No information known.
Conditions for safe storage, including any incompatibilities
Requirements to be met by storerooms and receptacles:
No special requirements.
Information about storage in one common storage facility:
Store away from oxidizing agents.
Further information about storage conditions:
Keep container tightly sealed.
Store in cool, dry conditions in well sealed containers.
Specific end use(s)
No further relevant information available.


Additional information about design of technical systems:
Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.
Control parameters
Components with limit values that require monitoring at the workplace:
The product does not contain any relevant quantities of materials with critical values that have to be monitored at the workplace.
Additional information:
No data
Exposure controls
Personal protective equipment
General protective and hygienic measures
The usual precautionary measures for handling chemicals should be followed.
Keep away from foodstuffs, beverages and feed.
Remove all soiled and contaminated clothing immediately.
Wash hands before breaks and at the end of work.
Maintain an ergonomically appropriate working environment.
Breathing equipment:
Use suitable respirator when high concentrations are present.
Protection of hands:
Impervious gloves
Check protective gloves prior to each use for their proper condition.
The selection of suitable gloves not only depends on the material, but also on quality. Quality will vary from manufacturer to manufacturer.
Penetration time of glove material (in minutes)
Not determined
Eye protection:
Safety glasses
Body protection:
Protective work clothing


Information on basic physical and chemical properties
General Information
Form: Crystalline
Color: Pale yellow
Odor: Odorless
Odor threshold: Not determined.
pH-value (100 g/l) at 20 °C (68 °F): 9.5
Change in condition
Melting point/Melting range: 69-71 °C (156-160 °F)
Boiling point/Boiling range: Not determined
Sublimation temperature / start: Not determined
Flammability (solid, gaseous)
Not determined.
Ignition temperature: Not determined
Decomposition temperature: Not determined
Auto igniting: Not determined.
Danger of explosion: Not determined.
Explosion limits:
Lower: Not determined
Upper: Not determined
Vapor pressure: Not applicable.
Density at 20 °C (68 °F): 1.85 g/cm³ (15.438 lbs/gal)
Relative density
Not determined.
Vapor density
Not applicable.
Evaporation rate
Not applicable.
Solubility in / Miscibility with Water at 20 °C (68 °F): 289 g/l
Partition coefficient (n-octanol/water): Not determined
dynamic: Not applicable.
kinematic: Not applicable.
Other information
No further relevant information available.


No information known.
Chemical stability
Stable under recommended storage conditions.
Thermal decomposition / conditions to be avoided:
Decomposition will not occur if used and stored according to specifications.
Possibility of hazardous reactions
Reacts with strong oxidizing agents
Conditions to avoid
No further relevant information available.
Incompatible materials:
Oxidizing agents
Hazardous decomposition products:
Carbon monoxide and carbon dioxide
Nitrogen oxides
Metal oxide fume
Potassium oxide


Information on toxicological effects
Acute toxicity:
The following RTECS statement/statements refer to the anhydrous compound:
The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicity data for components in this product.
LD/LC50 values that are relevant for classification:
No data
Skin irritation or corrosion:
May cause irritation
Eye irritation or corrosion:
May cause irritation
No sensitizing effects known.
Germ cell mutagenicity:
No effects known.
No classification data on carcinogenic properties of this material is available from the EPA, IARC, NTP, OSHA or ACGIH.
Reproductive toxicity:
The following RTECS statement/statements refer to the anhydrous compound:
The Registry of Toxic Effects of Chemical Substances (RTECS) contains reproductive data for this substance.
Specific target organ system toxicity - repeated exposure:
No effects known.
Specific target organ system toxicity - single exposure:
No effects known.
Aspiration hazard:
No effects known.
Subacute to chronic toxicity:
No effects known.
Additional toxicological information:
To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.


Aquatic toxicity:
No further relevant information available.
Persistence and degradability
No further relevant information available.
Bioaccumulative potential
No further relevant information available.
Mobility in soil
No further relevant information available.
Ecotoxical effects:
Harmful to aquatic organisms
Additional ecological information:
General notes:
Do not allow material to be released to the environment without proper governmental permits.
Do not allow undiluted product or large quantities to reach ground water, water course or sewage system.
May cause long lasting harmful effects to aquatic life.
Avoid transfer into the environment.
Harmful to aquatic organisms
Results of PBT and vPvB assessment
Not applicable.
Not applicable.
Other adverse effects
No further relevant information available.


Waste treatment methods
Consult state, local or national regulations to ensure proper disposal.
Uncleaned packagings:
Disposal must be made according to official regulations.


Not applicable
UN proper shipping name
Not applicable
Transport hazard class(es)
Not applicable
Packing group
Not applicable
Environmental hazards: Not applicable.
Special precautions for user
Not applicable.
Transport in bulk according to Annex II of MARPOL73/78 and the IBC Code
Not applicable.
Transport/Additional information: DOT
Marine Pollutant (DOT): No


Safety, health and environmental regulations/legislation specific for the substance or mixture
National regulations
All components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical substance Inventory.
All components of this product are listed on the Canadian Domestic Substances List (DSL).
SARA Section 313 (specific toxic chemical listings)
Substance is not listed.
California Proposition 65
Prop 65 - Chemicals known to cause cancer
Substance is not listed.
Prop 65 - Developmental toxicity
Substance is not listed.
Prop 65 - Developmental toxicity, female
Substance is not listed.
Prop 65 - Developmental toxicity, male
14459-95-1 Potassium hexacyanoferrate(II) trihydrate
Information about limitation of use:
For use only by technically qualified individuals.
Other regulations, limitations and prohibitive regulations
Substance of Very High Concern (SVHC) according to the REACH Regulations (EC) No. 1907/2006.
Substance is not listed.
The conditions of restrictions according to Article 67 and Annex XVII of the Regulation (EC) No 1907/2006 (REACH) for the manufacturing, placing on the market and use must be observed.
Substance is not listed.
Annex XIV of the REACH Regulations (requiring Authorisation for use)
Substance is not listed.
REACH - Pre-registered substances
Substance is not listed.
Chemical safety assessment:
A Chemical Safety Assessment has not been carried out.


Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2016 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.


Potassium Hexacyanoferrate(II) Trihydrate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Potassium ferricyanide trihydrate; Potassium Ferrocyanide Trihydrate; Yellow prussiate; Iron(2+) potassium cyanide hydrate (1:4:6:3); tetrapotassium iron(2+) hexacyanide trihydrate; Ferrate(4-), hexakis(cyano-C)-, tetrapotassium, trihydrate, (OC-6-11)-

Chemical Identifiers

Linear Formula K4Fe(CN)6 • 3H2O
CAS 14459-95-1
Pubchem CID 161067 16211991
MDL Number MFCD00167023
EC No. 237-722-2
IUPAC Name tetrapotassium; iron(2+); hexacyanide; trihydrate
SMILES [Fe+2].[K+].[K+].[K+].[K+].[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.O.O.O
InchI Identifier InChI=1S/6CN.Fe.4K.3H2O/c6*1-2;;;;;;;;/h;;;;;;;;;;;3*1H2/q6*-1;+2;4*+1;;;

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Products & Element Information


See more Iron products. Iron (atomic symbol: Fe, atomic number: 26) is a Block D, Group 8, Period 4 element with an atomic weight of 55.845. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electron configuration is [Ar] 3d6 4s2. Iron Bohr ModelThe iron atom has a radius of 126 pm and a Van der Waals radius of 194 pm. Iron was discovered by humans before 5000 BC. In its elemental form, iron has a lustrous grayish metallic appearance. Iron is the fourth most common element in the Earth's crust and the most common element by mass forming the earth as a whole. Iron is rarely found as a free element, since it tends to oxidize easily; it is usually found in minerals such as magnetite, hematite, goethite, limonite, or siderite.Elemental Iron Though pure iron is typically soft, the addition of carbon creates the alloy known as steel, which is significantly stronger.


Elemental PotassiumSee more Potassium products. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1. The potassium atom has a radius of 227.2 pm and a Van der Waals radius of 275 pm. Potassium was discovered and first isolated by Sir Humphrey Davy in 1807. Potassium is the seventh most abundant element on earth. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. As with other alkali metals, potassium decomposes in water with the evolution of hydrogen because of its reacts violently with water, it only occurs in nature in ionic salts.Potassium Bohr Model In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. The origin of the element's name comes from the English word 'potash,' meaning pot ashes, and the Arabic word qali, which means alkali. The symbol K originates from the Latin word kalium.

Recent Research

Comparison of UV/hydrogen peroxide, potassium ferrate(VI), and ozone in oxidizing the organic fraction of oil sands process-affected water (OSPW)., Wang, Chengjin, Klamerth Nikolaus, Messele Selamawit Ashagre, Singh Arvinder, Belosevic Miodrag, and El-Din Mohamed Gamal , Water Res, 2016 Sep 1, Volume 100, p.476-85, (2016)

[OP.1B.04] ASSOCIATIONS OF 15-YEAR AVERAGE POTASSIUM INTAKE WITH LONG-TERM CARDIOVASCULAR AND RENAL OUTCOME IN THE OUTPATIENT CLINICAL SETTING., Van Noordenne, N, Engberink R H. G. Olde, Van Den Hoek T C., Van Den Born B J. H., and Vogt L , J Hypertens, 2016 Sep, Volume 34 Suppl 2, p.e6, (2016)

[OP.8E.03] RELATION BETWEEN 24 HOURS URINARY SODIUM AND POTASSIUM EXCRETION AND BLOOD PRESSURE IN RURAL AND URBAN PYGMIES AND BANTUS OF SOUTHERN CAMEROON., Lemogoum, D, Hako Y, C Lele Bika, Okalla C, Dissongo J, M'buyamba-Kabangu J, Degaute J, Leeman M, and van de Borne P , J Hypertens, 2016 Sep, Volume 34 Suppl 2, p.e108, (2016)

Ultrasound facilitates the synthesis of potassium hexatitanate and co-intercalation with PbS-CdS nanoparticles., Sehati, S, and Entezari M H. , Ultrason Sonochem, 2016 Sep, Volume 32, p.348-56, (2016)

[OP.8E.02] SALT AND POTASSIUM INTAKE IN SOUTH AFRICA: AN EVALUATION OF 24-HOUR URINE COLLECTIONS IN THREE ETHNIC GROUPS., Swanepoel, B, Schutte A E., Steyn K, and Wentzel-Viljoen E , J Hypertens, 2016 Sep, Volume 34 Suppl 2, p.e108, (2016)

Effect of potassium monopersulfate (oxone) and operating parameters on sonochemical degradation of cationic dye in an aqueous solution., Soumia, Fassi, and Petrier Christian , Ultrason Sonochem, 2016 Sep, Volume 32, p.343-7, (2016)

Ménière's Disease: Molecular Analysis of Aquaporins 2, 3 and Potassium Channel KCNE1 Genes in Brazilian Patients., Lopes, Karen de Carvalh, Sartorato Edi Lúcia, da Silva-Costa Sueli M., Adamov Nadya Soares de, and Ganança Fernando Freitas , Otol Neurotol, 2016 Sep, Volume 37, Issue 8, p.1117-21, (2016)

Oxidative degradation of triclosan by potassium permanganate: Kinetics, degradation products, reaction mechanism, and toxicity evaluation., Chen, Jing, Qu Ruijuan, Pan Xiaoxue, and Wang Zunyao , Water Res, 2016 Oct 15, Volume 103, p.215-23, (2016)

Suppression of KV7/KCNQ potassium channel enhances neuronal differentiation of PC12 cells., Zhou, Najing, Huang Sha, Li Li, Huang Dongyang, Yan Yunli, Du Xiaona, and Zhang Hailin , Neuroscience, 2016 Oct 1, Volume 333, p.356-67, (2016)

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