The efficacy of any chemical additive hinges on its quality and adherence to specific technical parameters. For Anhydrous Zinc Borate, understanding its key specifications is crucial for manufacturers to ensure optimal performance in their diverse applications. NINGBO INNO PHARMCHEM CO.,LTD. emphasizes the importance of these specifications, providing high-purity Anhydrous Zinc Borate that meets stringent industry standards.

One of the most critical specifications for Anhydrous Zinc Borate is its chemical composition. Typical analyses focus on the percentages of Zinc Oxide (ZnO) and Boron Oxide (B2O3). For example, a common range for ZnO might be 37.0-40.0%, with B2O3 typically between 45.0-48.0%. These ratios directly influence the compound's performance as a flame retardant and its synergistic capabilities. Another vital parameter is the Loss on Ignition (LOI), which indicates the amount of water present. For anhydrous forms, this should be minimal, often around 13.0-15.5%, reflecting its dehydrated state and high thermal stability.

The physical characteristics of Anhydrous Zinc Borate are also paramount. Its appearance is typically a fine white powder, which is essential for uniform dispersion in polymer matrices and coatings. Particle size is another key specification, often measured by residue on a sieve, such as a maximum of 0.1% on a 325 mesh sieve. This fine particle size ensures good dispersibility and prevents negatively impacting the mechanical properties of the final product. Whiteness is also an important indicator of purity, with values often requiring a minimum of 95% or higher, especially for applications involving light-colored products.

For flame retardancy, the temperature of dehydration is a significant property. Anhydrous Zinc Borate typically dehydrates around 290-300°C, releasing water that contributes to flame suppression. Its high melting point, often around 980°C, indicates its excellent thermal stability, allowing it to perform effectively in high-temperature processing conditions. The refractive index, typically around 1.58, is another physical property noted in technical data sheets.

Impurities, such as lead (Pb) and cadmium (Cd), are closely monitored. Limits for these heavy metals are usually very low, often in the parts per million (ppm) range, to ensure environmental compliance and product safety. For instance, Pb is often limited to less than 10 ppm and Cd to less than 5 ppm. These stringent controls are essential for materials used in sensitive applications or those subject to strict regulatory oversight.

Manufacturers seeking to buy Anhydrous Zinc Borate should always consult the supplier's Certificate of Analysis (CoA) to verify that the product meets their specific requirements. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing Anhydrous Zinc Borate that adheres to rigorous quality standards, ensuring reliability and optimal performance for all its industrial applications. Understanding these specifications is the first step in leveraging the full potential of this exceptional material.