the application areas of sodium sulfide

Sodium sulfide also known as smelly alkali, smelly soda, yellow alkali, alkali sulfide, inorganic compounds, pure sodium sulfide for colorless crystalline powder. Industrial sodium sulfide because of impurities in its color is pink, brownish red, yellow. Specific gravity, melting point, boiling point, also vary due to the influence of impurities.

Application field

1, the dye industry is used for the production of vulcanized dyes, vulcanized green and vulcanized blue raw materials. Used in the printing and dyeing industry as a dye aid for dissolving vulcanized dyes. In leather industry, it is used to hydrolyze the raw skin and to prepare sodium polysulfide to accelerate the soaking of dry skin. Used in the paper industry as a cooking agent for paper. It is used in the textile industry for the reduction of denitrification and nitrification of artificial fibers and as a mordant for dyeing cotton fabrics. The medical industry produces antipyretic products such as phenacetin. In addition, it is also used for the production of sodium thiosulfate, sodium thihydride, sodium polysulfide and so on.

2. Adding proper amount of sodium sulfide to the alkaline etching solution of aluminum and alloy can significantly improve the etching surface quality, and can also be used to remove alkaline soluble heavy metal impurities such as zinc in the alkaline etching solution.

3, sodium sulfide can also be used for direct electroplating conductive layer processing, through the reaction of sodium sulfide and palladium colloidal palladium sulfide to achieve the purpose of forming a good conductive layer on the non-metallic surface.

4, used as corrosion inhibitor. It is also the raw material of sodium thiosulfate, sodium polysulfide, sulfide dyes and so on.

5, used for the manufacture of sulfide dyes, leather depilation agent, metal smelting, photography, rayon denitration, etc