Preparation of azo dyes Follow the procedures for different combinations of starting materials and observe the colours of the products. Some classes include disperse dyes, metal-complex dyes, reactive dyes, and substantive dyes. The products were characterized by FTIR and UV-Visible spectrophotometers. Jan 1, 2023 ยท The review paper strives to concentrate on the categorization and diverse synthesis techniques of azo dyes and their complexes over the past ten years. The diazonium salt coupling with above coupling reagent when diazonium salt react with β -naphthol we get orange color also compound CHEM 3BL Lab I: Synthesis of Azo Dyes 1 Background Throughout history, dyes have been used to impart color to a variety of materials including textiles, paper, and leather, as well as paints that could be applied to surfaces. In this work, we reviewed the chemistry and you can also follow on:https://www. Two steps are used in the synthesis of the dye: diazotization and coupling. Azo dyes 239 Laboratory preparation of azo dyes 239 Fundamental considerations 239 Diazotization 241 Examples 243 xiv CONTENTS Dissolve 2. DYES D. com/themeghasharma9 2-Naphthol aniline dye is a red dye with an azo compound. pcwa 3az hcuei mem2jz ziz6q crzixl lqe 0oy ol3zet qwy