POTASSIUM FERRICYANIDE
Synonyms: Red potassium prussiate; Potassium hexacyanoferrate(III)
CAS no: 13746-66-2
Molecular formula: K3Fe(CN)6
Molecular weight: 329.26
H.S.Code: 28372000
| Properties: |
Dark-red or gold-red crystalline granular powder; Odorless; Soluble in water and ketone, not soluble in methanol and liquid ammonia; Its hot solution can be decomposed by acid to release poisonous hydrogen cyanide; Also to produce blue precipitation when react with ferrous. |
| Application: |
Mainly used in pharmaceutical and photo industry, also used in printing plate, bleaching, paint, electroplating, leather making and refinery of metal,etc. |
| Package: |
25kgs net packed in weave bag with plastic bag outside, or 50kgs in fiber drum with plastic inside. |
| Storage: |
Stored far from humidity and brilliant sunshine; Not allowed to transport with salt and chemical materials for food; Water and sand are suitable if fire, but fire extinguisher of alkali and bubble are forbidden. |
Specifications
For industry
Items |
Grade A |
Grade B |
Grade C |
Grade D |
Purity [K3Fe(CN)6] |
98.5% min |
99.0% min |
99.5% min |
99.5% min |
Chloride [ KCl ] |
0.40% max |
0.25% max |
0.20% max |
0.05% max |
Sulphate [SO42– ] |
— |
— |
— |
0.01% max |
K4Fe(CN)6 |
0.40% max |
0.30% max |
0.25% max |
0.25% max |
Water insoluble matter |
0.03% max |
0.025% max |
0.020% max |
0.020% max |
Na+ |
— |
— |
— |
0.20% max |
For reagent
Items |
ACS Grade |
Chemical Purity |
Analysis Purity |
Purity [K3Fe(CN)6] |
99.0% min |
99.0% min |
99.50% min |
Chloride [ Cl– ] |
0.01% max |
0.02% max |
0.005% max |
Sulphate [ SO42– ] |
0.01% max |
0.01% max |
0.005% max |
K4Fe(CN)6 |
0.05% max |
0.10% max |
0.02% max |
Water insoluble matter |
0.005% max |
0.01% max |
0.005% max |
Na+ |
— |
— |
0.02% max |
For special users
If above index can not meet customer’s requirements, contract manufacturing is available upon detailed specifications.
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