Yellow prussiate of potassium
name:Yellow prussiate of potassium
Formula:C6H20FeN6Na4O10
M.W:484.06100
CAS NO.:14434-22-1
Characters:crystalline or powder of light yellow single italic, odorless, slightly salty, relative density 1.85.Stable under normal temperature, heated to 70 ℃ starts to lose crystal water, 100 ℃ when completely lose crystal water and into a white powder with hygroscopicity.It breaks down at high temperatures, releases nitrogen, and produces potassium cyanide and iron carbide.Soluble in water, insoluble in ethanol, ether, methyl acetate and liquid ammonia.
Usage:use authentic materials, heavy metal content is lower and less impurity, completely conform to the requirements of the food-grade, rules can be used for salt as anticaking agent in our country, the largest use of 0.005 g/kg (in ferrous cyanide).China GB 2760-96 provides for the use of salt as an anticoagulant.The maximum use was 0.01g/kg(in the cyanogen).Added to table salt, use 0.01g/kg(in the cyanogen).In specific use, the water solution with a concentration of 0.25~0.5g/100mL can be prepared and sprayed into 100kg of salt.In Europe, potassium ferricyanide is often used as an iron and copper ion remover in wine.
Specification:
Project | Demand |
colour and lustre | faint yellow |
texture | crystalline granules and powders. |
potassium hexacyanoferrateK4Fe(CN)6.3H2O,w/%≥ | 99.0 |
Chloride (in Cl),w/%≤ | 0.3 |
water insoluble; insoluble matter,w/%≤ | 0.02 |
sodium (Na)),w/%≤ | 0.2 |
arsenic(As)/(mg/kg)≤ | 1 |
cyanide | undergo a test |
Cyanhydrate (III) acid salt. | undergo a test |