POTASSIUM FERROCYANIDE
Synonyms: Yellow prussiate of potash; Potassium hexacyanoferrate(II), trihydrate
CAS no: 14459-95-1
Molecular formula: K4Fe(CN)6.3H2O
Molecular weight: 422.39
H.S.Code: 28372000
| Properties: |
Pale yellow crystal powder, soluble in water, not soluble in alcohol, decomposes when meeting acid and release strongly toxic hydrogen cyanide gas. When heated to 70℃ , it loses the crystalline water and turns to red. Burned violently, it decomposes and releases nitrogen. |
| Application: |
Mainly used in production of paint, dye, pharmaceutical, heat treatment of metal, food additive and steel and leather industry. Also it is used to manufacture potassium ferricyanide. |
| Package: |
25kgs net packed in weave bag with plastic bag outside, or 50kgs in fiber drum with plastic inside. |
| Storage: |
Stored in a dry and ventilated warehouse, sealed away from light. Avoid handling or transporting together with acid and alkali. |
Specifications:
For industry
Items |
Grade A |
Grade B |
Food grade |
FCC |
Purity [K4Fe(CN)6.3H2O] |
98.50% min |
99.0% min |
99.0% min |
99.0% min |
Chloride [ Cl– ] |
0.40% max |
0.30% max |
0.30% max |
0.02% max |
Water insoluble matter |
0.02% max |
0.01% max |
0.01% max |
0.01% max |
Carbonate |
— |
— |
— |
0.02% max |
Sulphate |
— |
— |
— |
0.02% max |
Cyanide [ CN– ] |
— |
— |
0.001% max |
— |
As |
— |
— |
0.0001% max |
— |
For reagent
Items |
Chemical Purity |
Analysis Purity |
Purity [K4Fe(CN)6·3H2O] |
99.0% |
99.50% |
Chloride [ Cl– ] |
0.02% |
0.005% |
Sulphate [ SO42– ] |
0.01% |
0.005% |
Water insoluble matter |
0.01% |
0.005% |
Na+ |
— |
0.02% |
For special users
If above index can not meet customer’s requirements, contract manufacturing is available upon detailed specifications.
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