In this experiment, students were expected synthesize methyl orange and test its pH and its dyeing characteristics on different fibers. In order to do this, students started with the diazonization of sulfanilic acid. To perform this diazionization, sulfanilic acid was placed in a vial with a spin vane and mixed with aqueous sodium carbonate, forming a salt. With the addition of sodium nitrite, an N-N-dimethyl aniline was formed and is what was used for the formation of methyl orange. To form the methyl orange, an electrophilic aromatic substitution was carried out. N-N-dimethyl aniline was mixed with acetic acid. With the addition of a few other compounds, the mix was put on the spin vane until a thick green-brown paste was formed. This paste
