SDS Sodium Dodecyl Sulfonate CAS 2386-53-0

Sodium Dodecyl Sulfonate offers excellent penetration, washing and wetting. It also has good decontamination, emulsification, and a high level of wetting.

About Sodium Dodecyl sulfonate：

Chemical structure: Sodium dodecyl sulfonate comprises a sulfonic acid group (-SO3-) and a twelve-carbon alkyl group (-C12H25). Its molecular formula is C12H25SO3Na, and its relative molecular mass is 288.4.

Solubility: Sodium dodecyl sulfonate is easily soluble in water, and its solubility is greater in hot water. It is also soluble in ethanol, glycerin and other organic solvents.

Surface activity: Sodium dodecyl sulfonate can significantly reduce the surface tension of water and has excellent wetting, penetration, emulsification, solubility and washing effects. Its surface activity increases with increasing temperature and is stable over a wide pH range.

Irritant: Sodium dodecyl sulfonate irritates the skin and eyes, and direct contact should be avoided when used.

Stability: Sodium dodecyl sulfonate is stable under normal storage conditions but will decompose under strong acid or base conditions.

Biodegradability: Sodium dodecyl sulfonate can be degraded by microorganisms, but takes a while to degrade in the natural environment.

Compatibility: Sodium dodecyl sulfonate can be compatible with other surfactants, salts, oils, etc., but at high concentrations, precipitation may occur.

Safety: Sodium dodecyl sulfonate is relatively safe at normal use concentrations but may cause skin and eye irritation at high concentrations or prolonged exposure. Therefore, direct contact should be avoided long and stored in a cool and dry place.

 Technical Parameter of Sodium Dodecyl sulfonate

Applications of Sodium dodecyl sulfonate: 

Detergent: Sodium dodecyl sulfonate is one of the main ingredients in the detergent industry. Because of its excellent wetting, emulsification, solubilization and decontamination properties, it is widely used in washing products such as washing powder, soap and dishwashing liquid. It can effectively remove stains, improve the washing effect, and is harmless to skin and clothing.

Cosmetics: In cosmetics, sodium dodecyl sulfonate is mainly used as an emulsifier, wetting, and cleaning agent. It can help make lotions, creams, cleansers, etc. so that cosmetics have better texture and stability. At the same time, sodium dodecyl sulfonate also has a certain antibacterial effect, which helps to maintain the hygiene of cosmetics.

Petroleum industry: In the petroleum industry, sodium dodecyl sulfonate is mainly used for drilling fluids and oilfield-produced water treatment. It can be used as an additive to improve the lubricity and stability of drilling fluids and reduce resistance and wear during drilling. At the same time, sodium dodecyl sulfonate can play the role of flocculation, sedimentation, and oil removal for oilfield-produced water, improving water quality and facilitating subsequent treatment.

Fibre processing: In textile and fibre processing, sodium dodecyl sulfonate is mainly used as dyeing AIDS and finishing agents. It can improve the dye's dispersion and permeability and the dyeing effect and uniformity. At the same time, sodium dodecyl sulfonate can also be used for antistatic finishing and soft finishing of fibres to improve the quality and comfort of textiles.

Pesticides: In pesticides, sodium dodecyl sulfonate is mainly used as a suspension and a developing agent.  At the same time, sodium dodecyl sulfonate can also help reduce the evaporation of pesticides and improve their stability.

Adhesives: In adhesives, sodium dodecyl sulfonate is mainly used as a coating lubricant. It can improve the adhesion and lubrication of the tape so that the tape can better adhere to the surface of various materials and is easy to tear. At the same time, sodium dodecyl sulfonate can also play an antistatic role, reducing the electrostatic problem in the use of tape.

Production Method of Sodium dodecyl sulfonate: 

Direct synthesis

Direct synthesis is a common method for preparing sodium dodecyl sulfonate. The method is to react dodecyl alcohol and sodium sulfide (Na2Sx) at a certain temperature and pressure to produce sodium dodecyl sulfonate and sodium thiosulfate. The reaction equation is as follows:

C12H25OH + Na2Sx → C12H25-SO3Na + Na2S2O3

The advantages of this method are simple process, mild reaction conditions, low equipment requirements, and suitability for large-scale production. However, the yield of direct synthesis is low; it needs to use a lot of sodium sulfide oxide, and the by-product of sodium thiosulfate is difficult to deal with, which is easy to cause environmental pollution.

Sulfonation method

Sulfonation is another common method for preparing sodium dodecyl sulfonate. The method is to react dodecyl alcohol with concentrated sulfuric acid at a certain temperature to produce sodium dodecyl sulfate and then neutralize with sodium hydroxide to produce sodium dodecyl sulfonate and sodium sulfate. The reaction equation is as follows:

C12H25OH + H2SO4 → C12H25-OSO3H + H2O

C12H25-OSO3H + NaOH → C12H25-SO3Na + Na2SO4 + H2O

The advantage of sulfonation is high yield, and the pure sodium dodecyl sulfonate product can be obtained. However, this method needs to use a lot of concentrated sulfuric acid and sodium hydroxide, and the by-product sodium sulfate is difficult to deal with, which is easy to cause environmental pollution. At the same time, the sulfonation method also requires anti-corrosion treatment of the equipment because the concentrated sulfuric acid is highly corrosive.

Packing & Shipping Sodium dodecyl sulfonate
There are different packing options depending on the Sodium Dodecyl Sulfonate Quantity.
 Sodium dodecyl sulfonate packing: 1kg per bottle, 25kg per barrel, or 200kg per barrel.
 Sodium dodecyl sulfonate shipping: As soon as payment is received, you can ship your order by air, sea, or express.

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