1. Performance Chemicals

• Epoxidation of Alkenes: Sodium tungstate, often in combination with hydrogen peroxide, acts as an effective catalyst for converting alkenes into epoxides. 
• Oxidation of Alcohols: It can oxidize primary alcohols to aldehydes and secondary alcohols to ketones. 
• Oxidation of Amines: It's used to oxidize secondary amines into nitrones.
• Synthesis of Lactams: In the presence of an acidic ionic liquid catalyst, sodium tungstate facilitates the synthesis of lactams from cyclic alcohols. 
• Synthesis of Pyranocoumarins: It's used as a catalyst in the synthesis of pyranocoumarins via a one-pot, three-component reaction.

2. Fabric Solutions

• Mordant: Sodium tungstate acts as a mordant, meaning it helps dyes bind to fabric fibers, improving color retention and vibrancy. 
• Colorfastness: By facilitating dye adhesion, sodium tungstate prevents dyes from washing out or fading when exposed to light or washing.

3. Metal Treatment

• Electroplating: Sodium tungstate is used in electroplating processes to deposit a layer of tungsten or tungsten alloys onto metal surfaces. This coating improves the metal's resistance to corrosion, wear, and other forms of degradation. It also enhances the aesthetic appearance of the treated metal. 
• Steel Manufacturing: Sodium tungstate dihydrate is used as a deoxidizing agent in steel production. It helps remove oxygen impurities during the steelmaking process, leading to a higher quality final product. 
• Synthesis of Tungsten Compounds and Materials: Sodium tungstate serves as a source of tungsten for the production of other tungsten compounds, such as tungsten metal, tungstic acid, and tungsten salts. It is also used in the synthesis of tungsten-containing catalysts, pigments, and dyes.