LAS Sodium Linear-Dodecylbenzenesulfonate CAS 25155-30-0

LAS can be made by neutralizing the dodecylbenzenesulfonic and sodium hydroxide. It is a common anionic surfactant.   Purity: 90%

About Sodium Linear-Dodecylbenzenesulfonate:

Physical state: Linear sodium dodecyl benzene sulfonate is a white or light yellow powder or crystal with a certain irritating odour.

Solubility: The substance is soluble in water, and its aqueous solution is slightly alkaline. The solubility is higher in hot water and increases with the increase in temperature. At the same time, it is also soluble in organic solvents such as glycerol, ethanol and propylene glycol.

Surface activity: linear sodium dodecyl benzene sulfonate molecules can reduce the surface tension of water with good wetting, penetration, emulsification, dispersion, solubilization and washing.

Foamability: Because the sulfonic acid group in its molecular structure can produce negative ions in water, they can be adsorbed on the water molecules in the air to form a stable foam. Therefore, linear sodium dodecyl benzene sulfonate has good foaming properties and is widely used in foam fire extinguishers, foam dust removal and other fields.

Deterring power: Because its molecules can be strongly adsorbed on oil and dust particles, prevent them from contacting the object to remove oil and dust effectively. Therefore, sodium linear dodecyl benzene sulfonate is a good detergent, washing powder, shampoo, body wash and other personal care products.

Stability: Linear sodium dodecyl benzene sulfonate is stable in weakly acidic and weakly alkaline media but prone to hydrolysis or oxidation reactions in strongly acidic and alkaline media. In addition, under high-temperature conditions, its molecular structure is prone to change, resulting in loss of surface activity. Therefore, use should avoid long-term high-temperature heating or contact with strong acids, alkalis and other substances.

Compatibility: Sodium linear dodecyl benzene sulfonate can be used with other surfactants, salts, oils and other substances, but it may chemically react with some substances or produce precipitates. Therefore, when used, it should be selected and tested according to the specific situation.

 Technical Parameter of Sodium Linear-Dodecylbenzenesulfonate:

Applications of Sodium Linear-Dodecylbenzenesulfonate: 

Detergent: Due to its strong decontamination ability, sodium linear dodecyl benzene sulfonate is widely used in laundry detergent, detergent, tableware detergent and other products. 

Cosmetics and personal care products: Sodium linear dodecyl benzene sulfonate has good foaming and wettability, can provide a good feeling of use, and has antibacterial, anti-inflammatory and other effects.

Industrial cleaning: Sodium linear dodecyl benzene sulfonate is also widely used in industrial cleaning, such as cleaning machinery, equipment, pipelines, buildings and so on. 

Petroleum and Mining: In the petroleum and mining industry, sodium linear dodecyl benzene sulfonate can be used for oil cleaning and removal to improve oil recovery and mineral extraction efficiency.

Agriculture: In the agricultural sector, sodium linear dodecyl benzene sulfonate can be used in the dilution and formulation of pesticides to improve the adhesion and permeability of pesticides, thereby improving the control effect.

Foam fire extinguisher: Because of its good foaming and fire extinguishing performance, linear sodium dodecyl benzene sulfonate is often used in producing foam fire extinguishers, which can effectively extinguish fires and protect people's lives and property safety.

Paper and textile: In the paper and textile industry, sodium linear dodecyl benzene sulfonate can be used to coat paper and dye textiles to improve the quality and stability of products.

Production Method of Sodium Linear-Dodecylbenzenesulfonate: 

Sulfonation reaction: dodecyl benzene and excess sulfuric acid are reacted in the sulfonation reactor, and the reaction temperature and pressure are controlled to make the sulfonation reaction proceed smoothly. The principle of a sulfonation reaction is to use sulfur atoms in sulfuric acid to replace the hydrogen atoms in dodecyl benzene to produce the corresponding sulfonic acid.

Neutralization: Dilute the sulfonation reaction product with water, and then add an appropriate amount of sodium hydroxide or sodium carbonate and other neutralizing agents to adjust the pH value of the solution to the required range. The neutralization aims to convert the sulfonate to sulfonic acid while removing the excess base.

Water washing: The neutralized solution is washed to remove excess sulfuric acid and sulfate. Washing is usually done several times until the pH of the solution is stable.

Desalting: A desalting process is required to obtain high-purity linear sodium dodecyl benzene sulfonate. There are many desalination methods, such as ion exchange, membrane separation, etc.

Neutralizer recovery: The neutralizer produced during production can be recovered and reused. There are various recovery methods, such as ion exchange, evaporation and crystallization. The recovered neutralizer can be used again for neutralization reactions, reducing production costs.

Packing & Shipping of Sodium Linear-Dodecylbenzenesulfonate:
 We have many different kinds of packing which depend on Sodium Linear-Dodecylbenzenesulfonate quantity.
 Sodium Linear-Dodecylbenzenesulfonate packing: 1kg/bottle. 25kg/barrel. 200kg/barrel.
 Sodium Linear-Dodecylbenzenesulfonate shipping: Once payment has been received, goods can be shipped by air, sea or express.

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