Friends, in today's chemistry experiment, we will prepare a compound of very colourful dye. Now, dyes are important because they give us colourful clothes and fabrics. We need some chemicals, two naphthal or beta naphthal, sodium hydroxide, caustic soda, and anyline sodium nitrate and also concentrated hydrochloric acid. So this is how we make the azodine. For a spore out, four milliliters of anyline in a measuring cylinder. Then add this anyline to 10 milliliters of concentrated hydrochloric acid in the beaker. In this reaction, a lot of fumes will be formed. Then add 20 milliliters of water to dilute this mixture. This mixture will become very hot. Before we use it, we have to cool it down in a bucket of ice to 5 degree centigrade. So place the solution in a jar full of ice for at least 10 minutes to reduce the temperature to 5 degree centigrade or below. Here we are placing the anyline beaker in a bath of cold water. Now for the second solution, add a few crystals of sodium nitrate to 20 milliliters of water in a beaker. Now stir the solution well. This is also an exothermic reaction and the solution will become hot. Cool it down to less than 5 degree centigrade by placing it in an ice bath. Before the third solution, add 2 naphthal to the solution of sodium hydroxide or caustic soda. To get a clear solution, you will have to stir this mixture for a long time until all the naphthal is dissolved. So be patient and keep stirring until all the naphthal in the mixture is dissolved. Now once again, you will have to cool the solution to less than 5 degree centigrade by placing it in a cold bath. Soon all the three solutions will be ready. The first solution is that of anyline in hydrochloric acid. The second solution is sodium nitrate and the third solution is 2 naphthal in sodium hydroxide. Now pour the first anyline solution into the second solution of sodium nitrate. So now you will have a full beaker and a half beaker. Both these beakers are small. Pour the contents of the full beaker into the first beaker, big beaker. Finally in the end pour the 2 naphthal solution in the big beaker. Now you will see a beautiful red colored precipitate. A dye, a colorful dye is being created. This is the azodye, aZO. The azodye is formed when anyline reacts with beta naphthal. Now to get the commercial dye we have to filter the solution. But what you can do is place a drop of the solution on a piece of filter paper and this would give you a good idea as to how this dye colors fabric and clothes. Look it's almost blood red. You can also dip some filter paper into the solution and this is the actual process of dyeing. This azodye is usually used to color fabrics. Now on filtering the solution you will get this kind of powder dye or the azodye. This will color our clothes orange or red. I can touch the dye with my fingers and you will see that my fingers take on an orange