BASF was originally founded in 1865 as a company to produce dyes. As the inventor of the original Hydrosulfite in 1904, BASF has significantly improved this heritage with the newer generations of dyeing and bleaching products for denim production and other applications.
Quality-oriented customers around the world seeking process stability and best yield need to look no further.
Hydrosulfite F
Hydrosulfite F is BASF’s most versatile grade of sodium dithionite. Based on a formate manufacturing approach, in line with our commitment to solutions based on sustainable manufacturing technologies, Hydrosulfite F brings to your process the consistency, quality and support that characterizes BASF as the original pioneer of hydrosulfite chemistry.
Commonly used as a reducing agent in textile, or bleaching additive in pulp and paper applications, hydrosulfite F is also utilized in other chemical processes, mineral extraction and various industrial products. Hydrosulfite F is formulated with 88.0% min sodium dithionite content and is a GOTS approved additive by ECOCERT Greenlife as well as certified according to ZDHC Level 3 v3.1.
HydroBlue® 90
HydroBlue® 90 is an improved formate-based hydrosulfite. It was formulated with a high degree of stability. Compared to other grades, HydroBlue® 90 is the most stable hydrosulfite on the market with extra-long shelf life of two years. The smallest variation in terms of sodium dithionite content can affect dyeing results, such as ring dyeing, fastness, and color fixation. With the consistent sodium dithionite content in HydroBlue® 90, reliable dyeing results are achieved to reproduce the same shade. In addition, measurements show that HydroBlue® 90 contain significantly less SO2 than other hydrosulfites, resulting in a reduced odor. HydroBlue® 90 is also dust free. HydroBlue® 90 is a GOTS approved additive by ECOCERT Greenlife as well as certified according to ZDHC Level 3 v3.1.
Adlite®
With a unique range of benefits for the pulp and paper industry, Adlite® offers new ways to approach thermomechanical pulping (TMP). Adlite® provides a brightness gain comparable to oxidative bleaching, a higher wood yield, substantially lower energy consumption, and less demand of chemicals in the entire production process from stock preparation to wastewater treatment. In addition, Adlite®'s stabilization system will allow refiners to optimize production processes and cost structure, while providing extra degrees of freedom to design paper grades.
In more details, Adlite® is the first reductive solution to offer a degree of brightness comparable to oxidative bleaching while keeping the uniformity of the wood fiber intact. Adlite® facilitates a smooth separation of the fibers out of the wood structure. Whereas the oxidative process requires the handling of various additional chemicals, Adlite® just adds just one substance to your paper production and thus, allows safe and easy handling. Since Adlite® offers high selective reaction control, no unwanted side reactions occur during the process. This avoids corrosion and deposits and your refiners run flawlessly with higher productivity for a longer period of time. The quality of your final product is much less dependent on the quality of the wood. Adlite® preserves the wood fiber during the milling process, the desired paper strength can be achieved with less energy and wood consumption. The same goes for the bleaching process: more ISO brightness for less energy. In general, Adlite® makes it much easier to meet environmental requirements.
Blankit®
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matter the source of raw material, Blankit® from BASF will help you achieve the optimal bleaching result. Blankit® is especially effective with recycled paper raw materials and is a white, microcrystalline
powder blend with sodium dithionite (Na2S2O4) as a main component. Blankit® products can be tailored to the industry’s specific needs. Focus is not only on the bleaching processes examined processes from start till end - from energy use to waste water disposal. With Blankit®, replacements of expensive raw materials such as cellulose with cheaper ones like waste paper are possible. This leads to reduced costs and preserves the environment. In addition, due to a reduced number of impurities, the paper fibers are also protected. This product is only available in Europe.
