Used primarily as an intermediate in organic synthesis, especially in the preparation of azo dyes and pigments. It serves as a coupling component in the formation of colored azo compounds due to its hydrazine functionality, which can undergo diazotization and subsequent coupling reactions. Also employed in the development of pharmaceuticals and agrochemicals where hydrazine derivatives are required as building blocks. Its tert-butylphenyl group adds steric bulk, influencing reactivity and solubility in certain synthetic pathways. Commonly handled with care due to potential toxicity and sensitivity.