1,2-Propylenediamine is a colorless to pale yellow liquid, known for its role in the synthesis of polymers, adhesives, and coatings. Its molecular structure, C3H10N2, makes it a key ingredient in epoxy curing agents and a precursor in pharmaceuticals. Its ability to enhance the properties of resins and polymers makes it indispensable in many industrial applications. It should be stored in airtight containers, away from light and moisture.