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Synthesis and Characterization of Dye Precursors: p-Nitroaniline and Related Compounds

This laboratory notebook outlines the pre-lab and in-lab procedures for synthesizing and characterizing dyes using p-nitroaniline, o-anisidine, and dianisidine. It includes the general chemical equation, physical data on reagents including p-nitroaniline, sodium nitrite, and more. The procedure section provides a brief outline, referencing the lab manual for detailed steps. Observations and calculations required during the experiment are systematically listed, emphasizing the volumes of reagents used, observed dye colors, and their approximate wavelengths.

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Synthesis and Characterization of Dye Precursors: p-Nitroaniline and Related Compounds

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  1. LABORATORY NOTEBOOK(Pre-lab) • TITLE AND DATE • OBJECTIVE • CHEMICAL EQUATION • Include the general chemical equation from the top of page 207. • TABLE OF PHYSICAL DATA • Include physical constants and hazards for p-nitroaniline, o-anisidine, dianisidine, sodium nitrite, and “R-salt”. • PROCEDURE • Include a brief outline of the procedure for the experiment. Do NOT ocpy directly from the lab manual. • Include a reference to the lab manual pages where the actual procedure can be found.

  2. LABORATORY NOTEBOOK(In-lab) OBSERVATIONS/CALCULATIONS MUST INCLUDE, BUT NOT LIMITED TO: • Volume of p-nitroaniline used • Volume of R-salt used in part A • Volume of NaNO2 used in part A • Volume of NaOH used in part A • Dye colors observed and approximate wavelengths • Volume of o-anisidine used in part B • Volume of dianisidine used in part B • Volume of NaNO2 used in part B • Volume of R-salt used in part B • Dye colors observed and approximated wavelengths

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