At NINGBO INNO PHARMCHEM CO.,LTD., we believe in providing comprehensive insights into the chemicals we offer. Optical Brightener OB-1, a key fluorescent whitening agent, boasts a unique set of technical properties that dictate its effectiveness across various applications. Understanding these technical details is crucial for manufacturers to achieve optimal results in plastics, textiles, and other materials.

Optical Brightener OB-1, with the chemical name 2,2′-(4,4′-diphenol vinyl) dibenzoxazole and CAS number 1533-45-5, is a stilbene bisbenzoxazole derivative. Its molecular formula is C28H18N2O2, giving it a molecular weight of approximately 414.45 g/mol. These chemical characteristics underpin its performance as a highly effective whitening agent.

A standout feature of OB-1 is its exceptional thermal stability. It exhibits a high melting point, typically in the range of 355-360°C. This property makes it highly suitable for high-temperature processing applications common in the plastics industry, such as injection molding and extrusion. Unlike less stable brighteners, OB-1 can withstand these conditions without significant degradation, ensuring that the desired brightening effect is achieved consistently. This makes it an excellent optical brightener OB-1 for plastics that are processed at elevated temperatures.

The purity of Optical Brightener OB-1 is another critical technical parameter, usually specified as ≥98.5%. High purity ensures consistent performance and predictable results, minimizing the risk of side reactions or impurities affecting the final product's appearance. Its appearance is described as a yellowish-green powder, with fineness often specified in mesh size (e.g., ≥400 mesh), which is important for dispersion within the host material.

Solubility is also a key consideration. Optical Brightener OB-1 is insoluble in water but soluble in high-boiling organic solvents such as trichlorobenzene and diphenyl ether. This characteristic dictates how it can be incorporated into different formulations and processing methods. Its compatibility with most polymers is excellent, further enhancing its versatility.

As a high temperature resistance optical brightener, OB-1's technical profile makes it ideal for applications requiring durability and longevity. Its effectiveness as a polyester fiber whitening agent also relies on these properties, allowing it to integrate well with synthetic fibers during manufacturing. The fluorescent brightener OB-1 price often reflects these advanced technical specifications, offering a premium performance that justifies the investment.

When sourcing, looking for a reputable optical brightener OB-1 supplier China is advisable to ensure you receive a product that meets these precise technical standards. NINGBO INNO PHARMCHEM CO.,LTD. provides detailed technical data sheets (TDS) for OB-1, offering further insights into its properties and optimal usage.

In conclusion, the technical specifications of Optical Brightener OB-1—from its chemical structure and high melting point to its purity and solubility—are fundamental to its efficacy. Understanding these properties allows manufacturers to harness its full potential for creating brighter, more visually appealing products.