Regent
1N HCL: Take 8.5 ml of hydrochloric acid in 100 ml of volumetric flask. It is made up of 100 ml and mixed it. It prepared 1N HCL.
6N Ammonium Hydroxide: take 100 ml of volumetric flask add 25 ml of water and add 45 ml of ammonium hydroxide makeup with 100 ml of water.
1N Sodium hydroxide: take a 100 ml volumetric flask and add 25 ml of water weight 4 g of sodium hydroxide. Sonication of the solution and dissolve it. Make up with water at 100 ml.
Thioacetamide regent: take a 100 ml volumetric flask and add 25 ml of water weight 4 g of thioacetamide. Sonication of the solution and dissolve it. Make up with water at 100 ml.
Procedure of testing
The aluminium layer from the sample 15 mg of aluminium layer in a glass 200 ml beaker. Put in 30 ml of 1 N HCL Beaker. Heat the solution till aluminium dissolves in that solution add about 1 ml of hydrochloric acid and 1 ml of thioacetamide regent. No precipitate is formed. Add drop-wise 1N NaOH Solution. A gelatinous white precipitate is formed. Which dissolves on further addition of 1N Sodium hydroxide solution after gradually addition of ammonium hydroxide solution gelatinous white precipitate is re-formed
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[…] the chemical method,Weight the aluminium layer 15 mg sample and put it in a beaker mixing 30ml 1NHCL then heat the beaker aluminium foil to dissolve, in solution add about 1 ml HCL and 1 ml of thioacetamide regents, no precipitate is formed, add drop wise NaoH solution, a gelatinous white precipitate is formed which dissolve on further addition of 1NaoH Solution after gradually addition ammonium hydroxide solution .gelatinous white precipitate is re-formed. […]
[…] test is performe to identify aluminium by the chemical method. Take a sample of the Grammage of the aluminium layer. Take in a beaker mix 30ml 1NHCL then heat on […]
[…] The identification of aluminium , Weigh the sample aluminium layer of 15 mg sample and put it in a beaker mixing 30ml 1NHCL then heat the beaker aluminium foil to dissolve, in solution add about 1 ml HCL and 1 ml of thioacetamide regents, no precipitate is formed, add dropwise NaoH solution, a gelatinous white precipitate is formed which dissolve on further addition of 1NaoH Solution after gradually addition ammonium hydroxide solution .gelatinous white precipitate is re-formed. […]
[…] test is performed to identify aluminium by the chemical method. Take a sample of the Grammage of the aluminium layer. Take in a beaker mix 30ml 1NHCL then heat on […]
[…] The chemical method of aluminium foil take the sample Weight the aluminium foil 15 mg sample put it in a beaker mix 30ml 1NHCL then heat it on the hot plate. the beaker aluminium foil to dissolve, in solution, add about 0.5 ml conc HCL and thioacetamide regents, no precipitate is formed, add dropwise NaoH solution and a gelatinous white precipitate is formed which dissolves on further addition of 1NaoH Solution after gradually addition ammonium hydroxide solution .gelatinous white precipitate is re-formed. […]
[…] testing of identification of the aluminium layer by the chemical method by chemical method, take the sample of “aluminium layer Grammage”, weight 15mg of the sample at analytical […]
[…] identification of the aluminium layer and the testing of identification by chemical method take the sample of the “aluminium layer Grammage”, weighing the sample at an analytical […]