Industry news released on April 20, 2026 reveals that anhydrous sodium sulfate, commonly known as Yuanmingfen, is being illegally used as a filler in textile auxiliaries by some enterprises due to its low cost and high water solubility, disrupting the market order. This white powder is often mixed into products such as acidic reduction cleaning agents, 吊白粉，and chelating dispersion powders, making it difficult to distinguish with the naked eye and easily leading to insufficient active ingredients of auxiliaries and poor printing and dyeing quality. The industry points out that the illegal addition of sodium sulfate also involves substitute alkalis, new sodium hydrosulfite and other categories. If flaky solid IW has insoluble white powder after being dissolved in ethanol, it probably contains sodium sulfate. Enterprises can accurately identify the adulteration ratio through active substance detection, infrared spectroscopy and other means to ensure formula stability. The industry calls for strengthening raw material control, standardizing the production and testing processes of auxiliaries, and maintaining the healthy development of the textile industry chain. For more information, please visit: https://www.tiktok.com/@mia_iota/video/7597717976720149782