Introduction
Sodium dodecylbenzenesulfonate (SDBS) is a white to light yellow powder or flake and is one of the most commonly used anionic surfactants. It possesses excellent detergency, wetting, emulsifying, foaming, and dispersing properties. Chemically stable, it resists acids, alkalis, and hard water, and has a high degree of biodegradability. In aqueous solutions, its hydrophilic and hydrophobic groups significantly reduce the surface tension of water.
Specification
| Item | Specification |
| Appearance | White or light yellow powder / flakes |
| Assay (Purity) | ≥ 90.0% (Active matter) |
| Melting Point | > 300 °C |
| Volatility | Non-volatile |
| Ash Content | Leaves sodium sulfate upon ignition |
| Solubility | Readily soluble in water, produces rich foam |
| Thermal Stability | Highly stable under normal storage and heating conditions |
Applications
- Detergent Industry: The main active ingredient in synthetic washing powders and liquid detergents (dishwashing liquids), providing core detergency and foaming.
- Textile Industry: Used as a cleaning agent and desizing assistant in pre-treatment to improve fabric hydrophilicity.
- Building Materials: Used as an air-entraining agent in cement and concrete processing to improve flowability and frost resistance.
Storage Requirements
Store in a dry, ventilated indoor environment. The product easily absorbs moisture and clumps, so packaging must remain tightly sealed. Keep away from open flames and strong oxidants.
Handling and Precautions
Has a certain degreasing and mild irritating effect on the skin. Prolonged barehanded contact with high-concentration products causes dry, peeling skin; wearing rubber gloves is recommended. Powdered products easily generate dust during handling; masks should be worn to prevent inhalation.
Formula & Function
High-Efficiency Dishwashing Liquid: Pure Water (70%) + SDBS (15%) + Sodium Laureth Sulfate/AES (10%) + Thickener/Preservative (5%).
Function: SDBS provides powerful detergency and rich foam in the formula. Its lipophilic tail inserts into the grease on dishes, while its hydrophilic head faces the water. This emulsifies and breaks the grease down into tiny droplets, encapsulating them so they detach from the dish surface and are washed away suspended in water.
Packaging
fiber drum or carton box, lined with PE bag. Customized packaging available upon request.