Indigo Essay Example
Indigo Synthesis
Author: Carolina Morales
Group #1
Lab Partners: Jennifer Capeloto, Samantha Hoffman and Adriana Garibay
Instructor: Saehan Park
Chem. 152, Section 43
Date Work Performed: February 10, 2010
Date Work Submitted: February 24, 2010
Abstract:
The percent yield of the color Indigo that is the color of blue jeans for the three trials was determined to be 13.50%, 15.30% and 14.80%. A series of experiments were performed to a cloth dye comparison. The absorbance of Disulfonic Acid in the experimental trial was 608nm with an absorbance of 1.037 with Beer’s law the epsilon value was determined to be 22416.67m-1c-1. The percent yield of the second indigo Carmine experiment was determined to be 7.55%, 8.06%, 6.91%, 5.10% and 4.72%.
Introduction:
This is a two week experiment involving transformation of matter where we will investigate the synthesis of the dye indigo, which will be made, isolated by the process of vacuum filtration and then evaluated. Indigo is the name given to an organic molecule with an intense blue color. It has been used to dye cotton and wool fabric, it is commonly known as the source of the color in blue jeans. The synthesis of new chemicals involves different processes. For example, first reactions are performed that generates new chemicals, and then the products are isolated from the other materials present, purified and characterized. The last step involves measurement of the chemical and physical properties to confirm their identity and purity. There are many different ways to make Indigo, using chemical equation, 2C7H5NO3 + 2C3H6 → C16H10N2O2 + 2CH3CO2H + 2H2O, the organic molecules are dissolved in water, a NaOH solution is then added to start the reaction, because Indigo is insoluble in water it precipitates as fast as it forms. The product will be collected by filtration and then will be quantified. By the process of Filtration is when the solid will be separated from the liquid leaving us with
Author: Carolina Morales
Group #1
Lab Partners: Jennifer Capeloto, Samantha Hoffman and Adriana Garibay
Instructor: Saehan Park
Chem. 152, Section 43
Date Work Performed: February 10, 2010
Date Work Submitted: February 24, 2010
Abstract:
The percent yield of the color Indigo that is the color of blue jeans for the three trials was determined to be 13.50%, 15.30% and 14.80%. A series of experiments were performed to a cloth dye comparison. The absorbance of Disulfonic Acid in the experimental trial was 608nm with an absorbance of 1.037 with Beer’s law the epsilon value was determined to be 22416.67m-1c-1. The percent yield of the second indigo Carmine experiment was determined to be 7.55%, 8.06%, 6.91%, 5.10% and 4.72%.
Introduction:
This is a two week experiment involving transformation of matter where we will investigate the synthesis of the dye indigo, which will be made, isolated by the process of vacuum filtration and then evaluated. Indigo is the name given to an organic molecule with an intense blue color. It has been used to dye cotton and wool fabric, it is commonly known as the source of the color in blue jeans. The synthesis of new chemicals involves different processes. For example, first reactions are performed that generates new chemicals, and then the products are isolated from the other materials present, purified and characterized. The last step involves measurement of the chemical and physical properties to confirm their identity and purity. There are many different ways to make Indigo, using chemical equation, 2C7H5NO3 + 2C3H6 → C16H10N2O2 + 2CH3CO2H + 2H2O, the organic molecules are dissolved in water, a NaOH solution is then added to start the reaction, because Indigo is insoluble in water it precipitates as fast as it forms. The product will be collected by filtration and then will be quantified. By the process of Filtration is when the solid will be separated from the liquid leaving us with