In the realm of specialty chemicals, Perylenediimide (PDI) stands out as a compound of significant industrial and scientific interest. Identified by its Chemical Abstracts Service (CAS) number 81-33-4, PDI is an organic molecule celebrated for its vibrant color and robust performance characteristics. Understanding its properties and applications is key for procurement specialists, formulators, and researchers working in fields such as pigments, dyes, and advanced materials.

Perylenediimide, with the molecular formula C24H10N2O4 and a molecular weight of 390.35 g/mol, presents as an amaranthine uniform powder. This deep red-purple to bordeaux hue is one of its most visually striking attributes. Its density is approximately 1.68 g/cm³, and it possesses a high boiling point of 821.4°C at 760 mmHg, indicative of its stable chemical structure.

The primary applications of PDI leverage its intense coloration and stability. It is widely recognized as Pigment Violet 29 (C.I. 71129) and also as Pigment Brown 26. In this capacity, PDI is utilized as a high-performance organic pigment in various industries. Its exceptional lightfastness and weatherability make it ideal for applications where color retention is paramount, such as automotive coatings, exterior paints, durable plastics, and high-quality printing inks. When purchasing PDI for pigment applications, formulators value its consistency and resistance to degradation.

Beyond its role as a pigment, PDI also functions as a vat dye. Vat dyes are known for their excellent fastness properties, particularly to washing and light, making them suitable for dyeing textiles that require long-lasting color. The robust nature of the PDI molecule contributes to its effectiveness in these demanding textile applications.

In recent years, PDI derivatives have also gained significant traction in the field of organic electronics, particularly in Organic Light-Emitting Diodes (OLEDs) and Organic Solar Cells (OPVs). Their tunable electronic properties allow them to act as efficient light emitters or charge transport materials. For these advanced applications, high purity is often a critical requirement, distinguishing them from standard pigment grades.

For companies looking to procure PDI, sourcing from a reputable Perylenediimide manufacturer is essential. We, as a leading chemical supplier, offer PDI with guaranteed purity (often 97% minimum) and consistent quality. When seeking to buy PDI, consider manufacturers based in China, as they often provide competitive Perylenediimide price options alongside a commitment to quality. Many suppliers, including ourselves, offer free samples to qualified buyers, allowing for rigorous testing before a significant purchase is made.

In conclusion, Perylenediimide (CAS 81-33-4) is a versatile and valuable organic compound. Its striking color, exceptional stability, and emerging role in organic electronics make it a compound of choice for numerous applications. By understanding its properties and engaging with reliable suppliers, businesses can effectively leverage the benefits of this important chemical.