Solvent Yellow 114 is a brilliant greenish-yellow solvent dye from the quinoline class, known for its high heat stability and good fastness properties. It is a premier choice for coloring polyester (PET), particularly in spin dyeing applications for fibers and filaments. Its ability to withstand high temperatures also makes it ideal for coloring other engineering plastics like polystyrene, ABS, and PMMA, where it imparts a vibrant and durable color.