Sodium Fatty Alcohol Polyoxyethylene Ether Sulfonate AESO-Na

Alcohol ether sulfonate AESO-Na, also known as sodium fatty alcohol polyoxyethylene sulfonate, is a new type of anionic-nonionic surfactant. Its structure is very similar to that of soap, but the embedded EO chains give it the characteristics of both anionic and nonionic surfactants, allowing it to be used over a wide pH range. It exhibits excellent cleaning, emulsifying, and dispersing properties, as well as the ability to disperse calcium soaps; it possesses good foaming capacity and foam stability; it is resistant to acids, alkalis, hard water, high temperatures, oxidizing agents, and reducing agents; it has good compatibility and, in particular, does not interfere with the performance of cationic surfactants; it offers good solubilizing properties, making it suitable for formulating functional transparent products, and is readily biodegradable.

Product Features

Name: Sodium Fatty Alcohol Polyoxyethylene Ether Sulfonate 
Structural Properties: 
1. Contains two hydrophilic groups with different properties (anionic and nonionic), combining the advantages of both anionic and nonionic surfactants. This prevents the chromatographic separation that occurs in formations when anionic and nonionic surfactants are used in combination. 
2. It has a low critical micelle concentration and surface tension; when formulated, it can achieve ultra-low interfacial tension with a wide range of crude oils of varying quality. 
3. It is resistant to high temperatures and high salinity; when formulated with sodium heavy alkylbenzenesulfonate and other anionic surfactants, it enhances the latter’s resistance to hardness. AESO-Na can withstand temperatures up to 300°C and remains clear and transparent in saturated NaCl and 3% CaCl₂ solutions. 
4. As the number of EO units increases, temperature and salt resistance improve; however, permeability and wettability decrease, cleaning performance declines, and surface tension increases, though emulsification and dispersion capabilities improve. 
Applications: 
Used as an oil displacement agent under high-temperature, high-salinity conditions, the high-temperature resistance of the alcohol ether sulfonate AESO-Na allows it to serve as the primary surfactant in steam flooding, significantly reducing the oil-water interfacial tension and improving crude oil recovery. 
Used as an emulsifying and viscosity-reducing agent for heavy oil, its viscosity-reducing performance is not affected by the salt content or mineralization level of the reservoir.

Application

It can be used in household detergents, industrial cleaning agents, and phosphate-free detergents; in the textile industry for processes such as scouring, mercerizing, bleaching, softening, and dyeing; as an emulsifier and viscosity reducer resistant to high temperatures and high-concentration electrolytes in tertiary oil recovery and oil transportation, to improve crude oil recovery rates and prevent wax precipitation; in the paper industry, it is used for deinking waste paper and in softener formulations; in the leather industry, it serves as a component of degreasing agents, among other applications.

Specifications

Directions for Use

This product is viscous and has poor flowability; it must be heated to 50–70°C in a reactor before being blended with other products.

Packaging Specifications

1. Depending on customer requirements, the product is packaged in ton containers or 200-kg drums and shipped to the designated location by the date specified by the customer.
2. This product is non-toxic and non-flammable; it should be stored and transported as a general chemical. Store in a dry, well-ventilated area.