It takes along time to filter this substance. 5.Filter the precipitate and wash it with water. A dark blue colour very fine powdered type substance precipitates. Add Iron Chloride solution into Potassium FerroCyanide(K4) solution while stirring briskly. Make a solution of 10gm of Potassium FerroCyanide in 75mL of water.
Make A solution of 5gm of Hydrated Iron(III) Chloride in 50mL of water.Ģ. = Prussian Blue Chemically known as Complex Ferro Cyanide (Fe43) Procedure 1.
Reaction InvolvedK2CrO4 + Pb(No3)2 PbCrO4 + 2KNO3 Efficiency Total mass of reactants used = (Excluding the mass of water used for dilution) Mass Of Paint/Pigment Obtained = Efficiency in formation of yellow colour Filter the precipitate and dry the pigment. Lead Chromate seperates as precipitate and is the required pigment. Pour The Potassium Chromate Solution in the Lead Nitrate and stir continuously. Dissolve 7gm of Potassium Chromate in 50mL water and 10gm Lead Nitrate in 100mL water in Two Separate Beakers. Chrome Yellow Chemically known as LEAD CHROMATE (PbCrO4) the yellow pigment is obtained as follows: Procedure1. 3.Medium- Medium used for making paints is made by mixing 30ml of clear glue with 10ml of water and adding a drop of liquid detergent to it. Sometimes the paint hardens but the addition of lukewarm water to it can soften it. For making poster paints the pigents made by various chemical reactions are thoroughly mixed with the medium. 2.Poster Paints- Grinding a pigment or a mixture to a very fine powdered and then suspending the powder ina very fine liquid makes poster paint so as to a uniform suspension. However the most common and useful classification is that color pigments can be made using simple chemical reactions and techniques. Pigments may be classified according to their composition or source which they are obtained from. Vinod For helping Me out During The Practical Part Of This Project.Īim Theory 1.Pigments–A pigment is a finely divided material which contributes to optical and other properties of paints. I would also like to thank my lab incharge Mr. Harsh Gupta without whose support and encouragement this project could never have have taken the present shape. Harsh Gupta) Contents S.no.Īcknowledgement I would like to show my gratitude to my Chemistry Teachers Ms. To Prepare Pigments And Poster Paints Using Various Chemicals And Reagents This is to certify that Pujit Singh Of XII-C Has accomplished this project entitled : To Prepare Pigments And Poster Paints Using Various Chemicals And Reagents.
0 kommentar(er)
