A chemical agent capable of reducing the surface tension of a liquid in which it is dissolved. Surface-active agent definition is - a substance useful for its cleansing, wetting, dispersing, or similar powers —called also surfactant. How to use surface-active. Surface Active Agents, Finishing Agents, Sulfonated Oils, and Assistants. Establishments primarily engaged in producing surface active preparations for.


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Where to surface active agent surfactant? Surface active agent suppliers Published: Due to the wide range of applications of these compounds, the surfactant market is surface active agent important sector of the economy in Poland and the world. The other name for surfactants is tensides.

What is the structure of surfactants? Surfactants are characterized by amphiphilic molecular structure.

This term is related to the word amphi, which in Greek means both types, both sides. These compounds contain two extremely different parts in their structure.

Surface-active Agent | Definition of Surface-active Agent by Merriam-Webster

The hydrophilic surface active agent of the surfactant may be polar groups that have a strong affinity for water. It is, among others, a hydroxyl, carboxylic, sulfate, sulfone or oxyethylene group.

The hydrophobic fragment is hydrocarbon chains. The tail can have a different structure and length depending on the amount of carbon atoms it contains.

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  • Surface-active agent

The surfactants contain straight, branched chains and also chains that have aromatic rings. What are the properties of surfactants? When dissolved or dispersed in a liquid, surfactants are adsorbed at the interface, changing the interfacial surface tension.

These compounds also have a common feature that is the ability to form micelles. Surfactants are characterized by resistance to alkali and hard water. Solubility in water Surfactants, because of their hydrophilic-hydrophobic structure, surface active agent in many solvents. The solubility in polar compounds results from the presence of a hydrophilic fragment in the molecule.

However, the longer and less branched hydrocarbon surface active agent, the lower the solubility in water. Surface active agent solubility of surfactants in water can be regulated by modifying their structure.

Increasing the solubility is possible by introducing into the molecule a polyoxyethylene moiety or after crossing the Krafft point, i. The solubility of the surfactant in water can be reduced by incorporating propylene oxide molecules into its structure.

Surface-active agent

Surface tension Surface tension is a force which acts at the interface. It is a constant and characteristic value for each liquid, strongly dependent on the temperature and the environment with which the liquid is in contact. The surface tension is the result of the unbalance of forces acting on the molecules located on the surface of the liquid and surface active agent it.

The surfactant molecules are adsorbed on the surface of the liquid phase, orientating with the surface active agent head to the inside of the liquid, and the hydrophobic tail towards the air.