For material scientists and product developers, a thorough understanding of chemical additives is vital for achieving optimal performance and aesthetics. Optical Brightener OB, identified by CAS 7128-64-5, is a leading fluorescent whitening agent that offers exceptional benefits for a variety of materials, particularly polymers. This article provides a technical overview, highlighting its properties and diverse applications, from the perspective of a leading chemical manufacturer and supplier.

Optical Brightener OB is a benzoxazole derivative, characterized by its molecular structure C26H26N2O2S. As a light yellowish powder, its primary function is to absorb UV radiation and re-emit it as visible blue light. This mechanism effectively masks yellowness in materials, imparting a brighter, whiter appearance. Its key technical properties include high purity (typically ≥99%), a melting point around 200-202°C, and excellent thermal stability. These attributes make it highly suitable for demanding processing conditions encountered in plastic manufacturing and other industrial applications.

The performance advantages of Optical Brightener OB are numerous. It delivers a brilliant blueish whitening effect, which is highly sought after in applications where aesthetic appeal is paramount. Coupled with good light fastness and low volatility, it ensures that the enhanced whiteness is long-lasting. This stability is crucial for end products exposed to light or processed at elevated temperatures. When purchasing Optical Brightener OB, these performance metrics are critical for formulation success.

The applications of Optical Brightener OB are extensive. It is widely incorporated into various plastics, including PVC, PS, ABS, PP, and PE, to improve their visual appearance. Beyond plastics, it serves effectively in coatings, paints, printing inks, and even in the manufacturing of synthetic fibers and textiles. Its compatibility across such a broad range of materials makes it a versatile solution for many industries. Manufacturers seeking to buy this product can rely on its proven efficacy.

As NINGBO INNO PHARMCHEM CO.,LTD., we are committed to providing manufacturers with high-quality chemical intermediates. Our Optical Brightener OB exemplifies this commitment, offering exceptional performance backed by rigorous quality control. For R&D scientists and product formulators seeking to enhance their products with superior whiteness and brightness, understanding the technical details of Optical Brightener OB is the first step towards successful implementation. We invite you to explore our offerings and discover how our chemical expertise can benefit your innovations.