Sodium meta nitro benzene sulphonate is a white or pale-yellow crystalline solid with the chemical formula C₆H₄NO₄SNa. It is a sulfonated derivative of nitrobenzene and is used as a surfactant, wetting agent, and dispersant.

Some of the uses and properties of sodium meta nitro benzene sulphonate include:

- Surfactant: It is used as a surfactant in various industries, including detergents, personal care products, and textile manufacturing. It helps in reducing the surface tension of liquids and promotes emulsification, foaming, and wetting.

- Wetting agent: Sodium meta nitro benzene sulphonate is used as a wetting agent to improve the wetting properties of fabrics, paper, and other materials. It helps in increasing the contact between liquids and solid surfaces.

- Dispersant: It is used as a dispersant to prevent the agglomeration and settling of particles in various formulations, such as paints, inks, and pesticides. It helps in maintaining the stability and uniformity of suspensions and emulsions.

- Emulsifier: Sodium meta nitro benzene sulphonate can be used as an emulsifier to stabilize emulsions, which are mixtures of immiscible liquids. It helps in preventing the separation of oil and water in salad dressings, cosmetics, and other products.

- Chemical intermediate: It is also used as a chemical intermediate in the synthesis of various other organic compounds.