Chemistry Lab Preparation Of A Dye - 830 Words

CH 220C – Organic Chemistry Lab Experiment 14: Preparation of a Dye: Azo Violet Rodan Devega Introduction The purpose of this laboratory experiment was to synthesize azo violet, and conduct a product analysis in the form of a dyeing test and indicator test. Synthesizing azo class dyes typically involves two steps, diazotization and diazonium coupling. Diazotization is the conversion of a p-nitroaniline’s amino substituent to a nitrogen-nitrogen triple bond, resulting in the formation of an aryl diazonium salt. It is facilitated with sodium nitrite and hydrochloric acid. Diazonium coupling, an electrophilic aromatic substitution, is the coupling of the aryl diazonium salt and resorcinol to form azo violet. It is facilitated with sodium acetate. Product analysis was conducted on azo violet in an effort to examine its response to the pH of different solutions (indicator test) and confirm its identity (dyeing test). Data and Results Qualitative observations concerning the synthesis of azo violet can be found on page 52 of carbon-copy notebook. Discussion A phosphodiesterase (PDE) is any enzyme that has the ability to break down phosphodiester bonds. Enzyme regulation may occur via metal-dye complexes within biological cells. Azo class dyes are molecules characterized by nitrogen-nitrogen double bonds that allow for conjugation within the molecule. Additionally, these dyes portray the essence of color as it reflects back light of different colors that is not absorbed. AShow MoreRelatedMy Career In Energy Technology1302 Words   |  6 PagesBackground My career in energy technology began in 2012, when I started my master’s coursework and research in electrochemistry at the University of Louisville’s Department of Chemistry. 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