For professionals in chemical manufacturing and product formulation, a deep understanding of a compound's properties is paramount to its effective application. 4,4'-Bis(2-sulfostyryl)biphenyl, identified by CAS number 38775-22-3, is a prime example of a specialty chemical whose unique properties make it indispensable as a fluorescent brightener. Often referred to as an optical brightener or C.I. Fluorescent Brightener 351, this compound’s functional characteristics drive its widespread use across numerous industries.

Chemically, 4,4'-Bis(2-sulfostyryl)biphenyl is characterized by its molecular formula C28H22O6S2 and a molecular weight of approximately 518.6 g/mol. Its defining property is its ability to absorb ultraviolet light (typically in the range of 340-380 nm) and re-emit it as visible blue light. This fluorescence is what effectively masks yellowing and enhances the perceived whiteness and brightness of materials. The compound’s physical appearance is generally a yellow powder, indicating its stable solid form at room temperature, which is advantageous for storage and handling by manufacturers.

A significant advantage for formulators is its solubility. While specific solubility data can vary, it is noted for its effectiveness in water-based systems, making it suitable for applications in detergents and textile finishing where water is a primary medium. Its stability under various conditions, including resistance to bleaching agents and a range of pH levels, further broadens its applicability. This robustness ensures that the whitening effect is maintained through processing and use, providing lasting value to the end product.

In the industrial context, the sourcing of such chemicals is critical. Procurement managers seeking to buy 4,4'-Bis(2-sulfostyryl)biphenyl often look for suppliers who can guarantee purity and consistent physical properties. Manufacturers in China are key players in the global supply chain for this compound, often offering competitive pricing for bulk purchases. When inquiring about this product, understanding its specifications, such as purity levels and absence of harmful contaminants, is as important as getting a price quote. Reliability of supply from a trusted manufacturer ensures that production lines remain operational without interruption.

In essence, the properties of 4,4'-Bis(2-sulfostyryl)biphenyl—its fluorescence, solubility, stability, and physical form—collectively define its utility as a superior fluorescent brightener. For companies aiming to enhance their product's visual appeal, partnering with a knowledgeable chemical manufacturer and supplier for this compound is a strategic step towards achieving exceptional results.