Sodium fluoroborate, with the chemical formula NaBF4, is a white or colorless crystal with a variety of applications and properties. Its physical properties include a relative density of 2.47 (20 °C) and a melting point of 384 °C, and it decomposes at this temperature. It is easily soluble in water, with a solubility of up to 108 g/100 g of water at 26.5 °C, but is only slightly soluble in alcohol.

Sodium fluoroborate is a versatile chemical that is widely used in a variety of fields. Its main uses include:

1. Catalyst: In organic synthesis, sodium fluoroborate is often used as a catalyst, especially in carbon-carbon bond formation reactions, such as the synthesis of fir alcohol.

2. Electroplating: In the electroplating industry, sodium fluoroborate is used to configure low chromic acid chrome plating electrolyte, which can improve the quality and efficiency of electroplating.

3. Resin finishing: In the textile industry, it is used as a catalyst for 2D resin finishing of medium and long fiber fabrics, which helps to improve the properties of fabrics.

4. Metal refining and casting: Sodium fluoroborate is used as a refining flux for non-ferrous metals, as well as a sand granulant for aluminum and magnesium alloy casting.

5. Oxidation inhibitor: In chemical and industrial processes, it acts as an oxidation inhibitor and helps prevent oxidation of materials.

6. Electrochemical treatment: During the electrochemical treatment, sodium fluoroborate is used as an electrolyte to improve the efficiency of the electrochemical reaction.

7. Coatings and paints: In the coatings and paints industry, it is used as an additive to improve the performance of products.

8. Fluorinating agent: Sodium fluoroborate is also used as a fluorinating agent to donate fluorine atoms in chemical reactions.

9. Chemical Reagent: In laboratory research, it is used as a chemical reagent for various chemical analysis and synthesis processes.