Selecting the appropriate fluorescent whitening agent (FWA) is crucial for textile manufacturers aiming to achieve superior brightness and visual appeal in their fabrics. Among the available options, Fluorescent Whitening Agent 113 stands out due to its robust performance and versatility. As a specialist manufacturer and supplier, understanding the nuances of this chemical auxiliary is key to unlocking its full potential.

Fluorescent Whitening Agent 113, often referred to by its CI designation 113, is a stilbene triazine derivative. Its primary function is to absorb ultraviolet light and re-emit it in the blue region of the visible spectrum, counteracting any yellowish cast in fibers and making them appear whiter and brighter. This makes it an indispensable component in the textile industry, particularly for cotton and cellulose fiber treatments.

When considering this agent, textile professionals should look for suppliers who can guarantee technical grade purity and consistent quality. Manufacturers often use it in two primary application methods: the exhausting whitening process and the padding process.

In the exhausting process, the FWA is applied during the dyeing cycle. Typical recommendations suggest a dosage of 0.05-0.3% based on the weight of the fiber (o.w.f.), with a bath ratio of 1:5-30 and a dyeing temperature of 40°C-100°C. This method ensures even distribution and effective brightening throughout the fabric.

For the padding process, the FWA is applied via a padding mangle. A concentration of 0.5-3 g/l with a 100% residue liquor ratio is common. This method is often used for continuous processing and can be highly efficient.

As a leading chemical supplier, we understand that procurement managers often inquire about the price and availability of such essential chemicals. Purchasing Fluorescent Whitening Agent 113 from a reliable manufacturer in China ensures competitive pricing and a stable supply chain. It is advisable to request samples to confirm the agent's performance with specific fabric types and existing processing conditions.

Factors such as light fastness, resistance to acids, alkalis, and peroxides, and its anionic nature—making it compatible with both anionic and nonionic surfactants—are significant advantages. These properties contribute to its widespread use and make it a preferred choice for achieving a brilliant white finish. For any textile manufacturer looking to buy this essential chemical auxiliary, partnering with a reputable supplier is the first step towards enhanced product quality and customer satisfaction.