In the competitive textile industry, the visual appeal of polyester fibers is paramount. Manufacturers continuously seek effective solutions to achieve brilliant white shades and enhance the overall aesthetic quality of their fabrics. One of the most effective chemical auxiliaries for this purpose is the optical brightener, and specifically, Optical Brightener ER-I (CAS 13001-39-3). As a leading supplier and manufacturer in China, we understand the critical role this product plays in textile production.

Optical Brightener ER-I, also known as Fluorescent Whitening Agent ER-I or C.I. 199, is a highly efficient fluorescent whitening agent. Its primary function is to absorb ultraviolet light and re-emit it in the blue region of the visible spectrum. This process effectively masks yellowing and enhances the perceived whiteness of the material, making it appear brighter and cleaner. This makes it an indispensable component for achieving the desired visual standards in polyester textiles.

The effectiveness of Optical Brightener ER-I in polyester fiber is well-documented. It exhibits excellent compatibility with polyester, ensuring uniform distribution and optimal performance during the dyeing and finishing processes. Its high fluorescence intensity and purity, often exceeding 99%, guarantee a significant improvement in whiteness without compromising the fiber's integrity. Furthermore, its good fastness to sublimation ensures that the whitening effect remains stable even under heat treatments, a common requirement in textile manufacturing.

For textile manufacturers looking to buy Optical Brightener ER-I, sourcing from a reputable China manufacturer is crucial. Reliability, consistent quality, and competitive pricing are key factors. By choosing a trusted supplier, you ensure access to high-purity ER-I that will consistently deliver the desired results, from batch to batch. This helps maintain product quality and customer satisfaction.

Beyond textiles, Optical Brightener ER-I also finds significant application in the plastics industry, particularly for PE, PP, and PVC. Its ability to enhance brightness and mask yellowness makes plastic products more visually appealing. Whether you are producing films, molded parts, or fibers, integrating this optical brightener can significantly elevate your product's marketability. Consider us your premier source when you need to buy high-quality optical brighteners for your diverse manufacturing needs.

To achieve the best results, recommended concentrations for Optical Brightener ER-I typically range from 0.02% to 0.08% by weight, depending on the specific application and the degree of whiteness required. Understanding these parameters is key to optimizing your formulation. If you are seeking a reliable supplier for Optical Brightener ER-I, look no further. We are committed to providing top-tier chemical auxiliaries to meet the evolving demands of the global market.