At the heart of many advanced whitening and brightening applications lies a crucial chemical intermediate: Disodium 4,4'-bis(2-sulfostyryl)biphenyl. Commonly known as Optical Brightener CBS-X, this compound (CAS 27344-41-8) is the backbone of many high-performance fluorescent whitening agents. Understanding its chemical nature, synthesis, and properties is key for industries relying on its unique capabilities. As a dedicated chemical manufacturer in China, we specialize in producing high-quality intermediates like this.

Disodium 4,4'-bis(2-sulfostyryl)biphenyl is a complex organic molecule characterized by a biphenyl core linked via vinyl groups to two benzenesulfonic acid moieties, present as disodium salts. This specific molecular structure is what grants it its remarkable fluorescent properties. The extended conjugation system allows for efficient absorption of UV light and subsequent emission of visible blue light, making it an effective optical brightener. The presence of sulfonate groups renders the molecule water-soluble, a critical feature for its primary applications in aqueous systems like detergents and paper manufacturing.

The synthesis of Disodium 4,4'-bis(2-sulfostyryl)biphenyl typically involves multi-step organic reactions. While specific proprietary methods exist, common routes often start with biphenyl derivatives and involve reactions like condensation and sulfonation. The precision required in these synthesis pathways ensures the purity and efficacy of the final product. For industries that buy optical brightener CBS-X, the underlying quality of this intermediate is paramount. Our manufacturing processes are designed to yield a product with high purity, minimal impurities, and consistent physical characteristics, such as its yellowish-green crystalline powder appearance.

The properties derived from its chemical structure – excellent water solubility, high stability (including resistance to bleach), and potent fluorescence – make Disodium 4,4'-bis(2-sulfostyryl)biphenyl an indispensable component in the production of optical brighteners for detergents, textiles, paper, and other industrial applications. As a leading supplier of this vital chemical intermediate from China, we are committed to providing manufacturers with the foundational materials needed for their advanced product formulations. We encourage businesses to partner with us for a reliable and high-quality supply of Disodium 4,4'-bis(2-sulfostyryl)biphenyl.