Used as an intermediate in the synthesis of azo dyes and pigments, particularly for producing colorants with good light and heat stability. It also serves in the preparation of pharmaceutical compounds, especially in the development of antitumor and antimicrobial agents. Its hydrazine functionality allows it to act as a building block in heterocyclic chemistry, enabling the formation of various nitrogen-containing rings important in agrochemicals and medicinal chemistry. Additionally, it finds use in analytical chemistry as a derivatizing agent for carbonyl compounds to aid in their detection and quantification.