For formulators and procurement specialists in the chemical and cosmetic industries, a thorough understanding of ingredient specifications is fundamental to successful product development. UV Absorber Benzophenone-4 (BP-4), also known as Sulisobenzone, is a widely utilized UV filter, and knowing its precise technical details is key when looking to buy UV Absorber Benzophenone-4 powder. Ningbo Inno Pharmchem Co., Ltd., as a dedicated manufacturer, provides clarity on these critical parameters.

Deciphering Benzophenone-4 Specifications

Benzophenone-4 is valued for its effectiveness as a UV filter, primarily absorbing UVB and short-wave UVA radiation. Its chemical identity is often listed as 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid, with a molecular formula of C14H12O6S and a molecular weight of approximately 308.30600. However, for practical procurement, the following specifications are of utmost importance:

• Appearance: High-quality BP-4 is typically described as a White or light yellow crystalline powder. Variations in color or form can indicate impurities or improper processing.
• Assay (Purity): This is a critical parameter for efficacy. Reputable suppliers, like Ningbo Inno Pharmchem, offer Benzophenone-4 with an assay of ≥99%, ensuring maximum UV protection and formulation stability.
• Loss on Drying (LOD): This measures the volatile content, mainly moisture. A low LOD (≤3.0%) is desirable for ensuring the product's shelf life and preventing issues in formulations.
• Heavy Metals: For cosmetic and personal care applications, stringent limits on heavy metals (e.g., ≤5ppm) are essential for safety and regulatory compliance.
• Turbidity and Hazen Color: These indicators relate to the clarity and color of solutions made from the powder. Low turbidity and a low Hazen value (e.g., ≤4.0 EBC) suggest a cleaner, higher-grade product.
• pH: The pH range (e.g., 1.20-2.20) can be indicative of the salt form and solubility characteristics.

The Advantage of Sourcing from a Trusted UV Filter Supplier

When sourcing specialty chemicals like UV Absorber Benzophenone-4, selecting a reliable Sulisobenzone supplier is crucial. Ningbo Inno Pharmchem Co., Ltd. prides itself on adhering to rigorous quality control measures, ensuring that every batch of our BP-4 meets or exceeds these critical specifications. Our commitment as a Benzophenone-4 manufacturer means you can trust the consistency and purity of our product.

Understanding these specifications empowers formulators to make informed decisions, ensuring that the chosen ingredient will perform as expected in their final products, whether for cosmetics, inks, or coatings. We aim to be more than just a supplier; we strive to be a partner by providing high-quality materials at a competitive Benzophenone-4 manufacturer price, backed by technical expertise. By focusing on quality specifications, you can effectively leverage the protective power of Benzophenone-4.