TIB Chemicals AG Sodium hydrogen sulphide solution

Sodium hydrogensulfide is mainly used in three areas where the product has proved its worth. Thus, sodium hydrogen sulfide is required for the precipitation of heavy metals in sewage-works. This means that either individual heavy metals such as chromium or nickel can be released from the wastewater, as well as complexes of heavy metals. Sodium hydrogensulfide is therefore a practical and inexpensive alternative product in industry for conventional cation exchangers. Therefore, companies use sodium hydrogen sulfide for water treatment in the metal industry, the glass and ceramics industries, in printing plants, in the metallurgical industry or in metal processing as well as for soil remediation.

Another important area of ​​application of sodium hydrogen sulfide is leather production. During the liming, the animal hair is removed from the skin or fur. This is important for the preparation of the subsequent tanning. The method later determines the structure and characteristics of leather to be processed for bags, shoes or clothing. In earlier times wood ash was used for liming, hence the term. But in modern industry, sodium hydrogen sulfide is used. With it waste water that is harmful to the environment is generated, which must be processed further by the companies.

Sodium hydrogensulfide is also used to make paper or pulp to remove lignin from the wood chips necessary for paper. In a complex cooking process a chemical treatment of the wood chips takes place. The contained lignin in the wood colors the pulp brown. For paper making, it is therefore important to clean and whiten the mass. This removes unwanted residues and discoloration. Substances such as sodium hydrogensulfide are used for this purpose.

Further applications of sodium hydrogen sulfide NaHS in industrial production

Sodium hydrogen sulfide from TIB Chemicals is an important contribution in many areas of the industry, such as the leather industry, paper making, water treatment and heavy metal precipitation. In addition, sodium hydrogen sulfide is required in the pigment industry during the production process of paints and varnishes.

Sodium hydrogensulfide is flake-shaped as a solid and available as a lye in liquid form. The scales show up through an unpleasant odor. The product has good properties in solubility in water. In the ore flotation, sodium hydrogen sulfide is used as an auxiliary. The flotation is a chemical separation process in which fine-grained solids such as ores are dissolved in an aqueous slurry. In addition, the product is marked with the danger identification toxic, corrosive and environmentally hazardous. Therefore, a certain experience and prudence in the use of the product in the industry is necessary.

The most important uses of sodium hydrogen sulfide NaHS (CAS No. 16721-80-5) are:

• Precipitation of heavy metals in sewage treatment plants
• In applications of the leather industry to remove hairs from skins
• Paper or pulp production to remove the lignin from the wood chips
• Preparation of thioglycolic acid
• ore flotation
• Industrial cleaning applications
• Reducing agent
• Water treatment
• Heavy metal precipitation
• Pigment industry
• Production of luminous pigments

Concluding remarks on the use of sodium hydrogen sulfide NaHS

Sodium hydrogensulfide is also used in the industry as an adjuvant or a reducing agent. Important areas of application are here, for example, leather production, water treatment or the pigment industry. In addition, sodium hydrogen sulfide is used in a variant of the well-known Asinger reaction. Despite a certain danger of the product, it offers numerous advantages in production processes and is convenient to store and easy to use