At NINGBO INNO PHARMCHEM CO.,LTD., we pride ourselves on offering high-quality chemical solutions, including our Fluorescent Whitening Agent VBL, also known as Optical Brightener VBL. To effectively utilize such compounds, understanding their chemical properties and behavior is essential. This article explores the detailed characteristics of VBL.

Fluorescent Whitening Agent VBL is classified as a disulfonated stilbene derivative, often identified by its C.I. Number 85 and CAS Number 12224-06-5. Chemically, it is designed to absorb ultraviolet radiation in the range of approximately 340-370 nm and re-emit this energy as visible light in the blue region of the spectrum (around 420-470 nm). This phenomenon of fluorescence is what causes the perceived increase in whiteness and brightness.

The physical form of VBL is typically a light yellow powder. Its solubility characteristics are important for application; it is soluble in soft water and can be used in aqueous solutions. As an anionic compound, VBL exhibits good compatibility with anionic and non-ionic surfactants and other textile auxiliaries commonly used in formulations. However, it is important to note that VBL is sensitive to heavy metal ions like copper and iron, and therefore, it is generally not recommended for use with cationic dyestuffs or surfactants, as this can lead to precipitation or reduced effectiveness.

The VBL optical brightener chemical properties include resistance to weak acids, alkalis, and hydrogen peroxide. This stability is crucial for its application in various industrial processes, such as textile dyeing and finishing, or in detergent formulations, which often involve alkaline conditions or bleaching agents. This resilience ensures that the optical brightening effect is maintained throughout processing and use.

For the textile industry, the fluorescent whitening agent VBL textile applications are enhanced by its neutral color tone and good wash fastness. This means that treated fabrics maintain their enhanced whiteness even after multiple washing cycles. Manufacturers often choose VBL as the optical brightener for cotton and other cellulosic fibers due to these properties.

Similarly, in the paper industry, the paper industry optical brightener VBL leverages these properties to improve the visual appeal of paper products. Its ability to function effectively in aqueous systems makes it suitable for pulp, sizing, and coating applications.

The efficacy of detergent whitening agent VBL in laundry applications is also a direct result of its chemical nature. Its ability to deposit onto fibers and fluoresce under UV light makes laundry appear whiter and colors more vibrant.

NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing high-quality Fluorescent Whitening Agent VBL. By understanding the optical brightener VBL uses and its specific chemical properties, you can optimize its application for the best results. For inquiries about the fluorescent whitening agent VBL CAS number or other product details, please reach out to us.