Ethyl 3,5-diaminobenzoate is primarily used as an intermediate in the synthesis of more complex chemical compounds. It plays a significant role in the production of dyes and pigments, particularly azo dyes, which are widely used in the textile industry for coloring fabrics. Additionally, this compound is utilized in the development of pharmaceuticals, where it serves as a building block for active pharmaceutical ingredients (APIs). Its diamino structure makes it valuable in polymer chemistry, contributing to the creation of specialized polymers and resins with enhanced properties. Furthermore, it finds application in organic synthesis for producing compounds with potential biological activity, such as antimicrobial or antioxidant agents. Its versatility makes it a key component in various industrial and research applications.