Potassium ferrocyanide | Wiki | Everipedia

Preparation of potassium ferrocyanide …

labeled potassium ferrocyanide (K4[Fe ..

Potassium ferrocyanide itself is only slightly toxic, although adding acid to its aqueous solution releases toxic hydrogen cyanide gas. While it is not , it may cause irritation if it is ingested, inhaled, or if it comes into contact with skin. The best solution in these situations is to remove the victim to fresh air or wash the affected area thoroughly with water. It causes harm in aqueous environments and is especially toxic to aquatic organisms. The (LD50) in rats is 6400 mg/kg.

Kwong, H.-L., Afonso, C. A. M. and Branco, L. C. 2007. Potassium Ferricyanide. e-EROS Encyclopedia of Reagents for Organic Synthesis. .

Make a note of the color of the potassium ferrocyanide solution on ..

Potassium ferrocyanide is also used to test for protein. and are added to an aqueous solution of the substance being tested. The formation of a white precipitate confirms the presence of protein.

This reaction can be used to remove potassium ferrocyanide from a solution. When the two are combined, the product is . Potassium ferrocyanide, potassium ferricyanide, and Prussian blue account for over 97% of cyanides in the environment.


Potassium ferrocyanide : Wikis (The Full Wiki)

Potassium ferrocyanide, also known as yellow prussiate of potash or potassium hexacyanidoferrate(II), is a of formula K4[Fe(CN)6]•3H2O, which forms lemon-yellow at , and which decomposes at its boiling point.

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Chemical equation:
4 FeCl3 + 3 K4Fe(CN)6 → Fe4[Fe(CN)6]3 + 12 KCl
Prussian Blue has been used in the medical area to remove certain toxins from bodies
Final Reflections:
Central Goals:
Specific Goals
Make balanced chemical equations for the creation of zinc phosphate and potassium ferrocyanide and determine amounts of reactants needed to synthesize 0.3 g of each
Prepare three different samples of paints with each pigment (using acetone, egg yolk, and linseed oil) and test on three different mediums (paper, tin foil, and chicken bone)
Using our balanced equation and the molar masses of the substances, we calculated and measured out 0.376 grams of ZnSO4 and 0.255 grams of Na3PO4 in order to synthesize 0.3 grams of zinc phosphate: Zn3(PO4)2
Step 1
Pigments
Inorganic pigments are more economically favorable for production and use, although they have less variety than natural organic pigments
Background Cont..

BISMUTH POTASSIUM FERROCYANIDE CAS#:


We determined the effectiveness of the paint dryness and adhesion to the surface by timing and touching/observing it.

Using our balanced equation and the molar masses of the substances, we measured out 0.422 grams of Potassium Ferrocyanide and 0.255 grams of Iron (III) Chloride in order to synthesize 0.3 grams of zinc phosphate: Zn3(PO4)2
Step 1
Step 2:
We added the K4Fe(CN)6 and FeCl3 to
20 mL of water each and stirred until they were completely dissolved.
Step 3:
We combined the water solutions into one solution, which reacted to produce Prussian Blue
Step 4:
We used vacuum filtration to separate the water from the pigment.
Step 5:
Taking what was left on the filter paper from the previous step and placing it on a watch glass, we let the pigment dry for a week
Procedures:
Week 1
Results:
Procedure:
Week 2
Step 1:
We measured how much in grams of zinc phosphate we were able to synthesize: 0.19 grams
Step 2:
In order to test 3 different binders, we separated the amount into 3 equal amounts by mass onto 3 watch glasses
Step 3:
We measured 20 mL of each binder that we decided to use: egg yolk, acetone, and linseed oil
Step 4:
We added 5 mL of each binder to the three separated samples of our pigment and added 1 mL at a time until it was of a sufficient paint thickness
Step 5:
Egg Yolk and Acetone-
The egg yolk and acetone binder overpowered the white pigment and washed out any color that was present on all three different surfaces.