Polyoxyethylene(20)sorbitan monostearate CAS 9005-67-8

Polyoxyethylene(20)sorbitan monostearate is a non-ionic surfactant, which has been widely used in food, daily chemical, medicine, mechanical processing and other fields.

About Polyoxyethylene(20)sorbitan monostearate:    

Surface activity: Polyoxyethylene sorbitan monostearate (20) is a non-ionic surfactant that reduces surface tension, wetting, emulsifying, dispersing, and solubilizing. It can effectively reduce the interfacial tension of oil and water, promote the uniform distribution of droplets in the oil and water mixture, and improve the wettability and permeability of droplets.

Emulsifying performance: polyoxyethylene sorbitan mono-stearate (20) has a good emulsifying performance and can form a stable emulsion of oily substances. It can maintain the stability of the emulsion by forming an interface film on the oil-water interface to wrap the oily substance in the emulsion drop.

Dispersion performance: polyoxyethylene sorbitan mono-stearate (20) has good dispersion performance, which can disperse solid particles or pigments into fine particles in the medium to prevent the aggregation and precipitation of particles. It can increase the repulsive force between particles and maintain the stability of the dispersion system by forming an adsorption layer on the surface of the particles.

Wettability: polyoxyethylene sorbitan monostearate (20) has good wettability, promoting the spread and penetration of liquid on solid surfaces. It can improve the wetting efficiency by reducing the surface tension and increasing the contact area and adhesion between the liquid and the solid surface.

Solubilization performance: polyoxyethylene sorbitan mono-stearate (20) has good solubilization performance and can dissolve oil-soluble substances in water to form a transparent aqueous solution. It can increase the solubility of oil-soluble substances in water and improve the stability of the solution by forming an interface film on the oil-water interface.

Acid, alkali and salt resistance: polyoxyethylene sorbitan mono-stearate (20) has good acid, alkali and salt resistance and can maintain stability under different pH values and salt concentrations.

Less irritating: Compared with other surfactants, polyoxyethylene sorbitan monostearate (20) is less irritating and less irritating to the skin and eyes and is suitable for producing cosmetics and personal care products.

Technical Parameter of Polyoxyethylene(20)sorbitan monostearate:

Applications of Polyoxyethylene(20)sorbitan monostearate:

Cosmetics and personal care products: Polyoxyethylene sorbitan monostearate (20) helps improve the product's stability, spreadability, and durability, as well as absorption and penetration of the skin, enhancing the use effect and experience. It is widely used in cosmetics such as face cream, lotion, foundation and lipstick, as well as in personal care products such as shampoo, body wash and facial cleanser.

Detergent: Polyoxyethylene sorbitan monostearate (20) is used in detergents as additives such as stabilizers, softeners and thickeners. It helps to improve the washing liquid's stability, reduce the aqueous solution's surface tension, promote the removal of stains and impurities, and improve the washing effect. It is widely used in washing products such as powder, liquid and detergent.

Paints and coatings: Polyoxyethylene sorbitan monostearate (20) is used in paints and coatings as additives such as wetting agents, levelling agents and thickeners. It helps to improve the fluidity and levelling of the coating and improves the adhesion and uniformity of the coating. It can also play the role of a defoamer to reduce bubbles and defects in the coating.

Pesticides and fertilizers: Polyoxyethylene sorbitan monostearate (20) is used in pesticides and fertilizers as additives such as dispersants, wetting agents and stabilizers. It helps to improve the dispersity and adhesion of pesticides and fertilizers, increase the absorption of nutrients, and control the effect of plants while improving the stability of pesticides and reducing drug damage and residues.

Pharmaceutical field: Polyoxyethylene sorbitan monostearate (20) is used as a drug carrier, drug emulsifier and stabilizer of injections in the pharmaceutical field. It helps to improve the solubility and stability of drugs, promote the uniform distribution and absorption of drugs, and improve the efficacy and safety of drugs.

Textile and printing: Polyoxyethylene sorbitan monostearate (20) is used as a wetting agent, softener and diffuser additive in textile and printing. It helps to improve the fabric's feel, wettability and dyeing effect and the brightness and uniformity of printing and dyeing.

Plastics industry: Polyoxyethylene sorbitan monostearate (20) is used as a plasticizer, stabilizer, and lubricant additive. It helps improve the processing performance, stability, and surface gloss of plastics and the appearance and performance of plastic products.

Production Method of Polyoxyethylene(20)sorbitan monostearate:

Preparation of raw materials: Polyoxyethylene sorbitan mono-stearate (20) includes sorbitan, chloroacetic acid, sodium hydroxide, water and catalyst. These raw materials need to be prepared by a certain formula ratio to ensure the smooth progress of production.

Esterification reaction: sorbitan anhydride and chloroacetic acid are esterification reactions under appropriate temperature and pressure conditions to produce sorbitan monoacetate. In the process of esterification, it is necessary to control the reaction temperature, pressure and the ratio of raw materials to ensure the complete reaction and the generation of target products.

Sulfonation reaction: sorbitan monoacetate is sulfonated, and sulfonic acid groups are introduced. The sulfonation reaction is usually carried out under higher temperature and pressure conditions, using sulfonating agents such as sulfuric acid or chlorosulfonic acid. 

Polymerization reaction: After the completion of the sulfonation reaction, a polymerization reaction is needed to form a polyoxyethylene sorbitan monostearate (20) by combining the polyoxyethylene group with the sulfonic acid group. The polymerization is usually carried out under appropriate temperature and pressure conditions, using a base such as sodium hydroxide or calcium hydroxide as a neutralizer to adjust the pH to the target range. 

Separation and purification: After the above reaction steps, the product obtained is a mixture, which needs to be separated and purified. It is usually separated and purified by crystallization, filtration, recrystallization and other methods to obtain high-purity polyoxyethylene sorbitan monostearate (20) products. The purpose of separation and purification is to remove by-products and impurities and improve the purity and yield of the target product.

Wastewater treatment: A certain amount of wastewater is generated during production and needs to be treated appropriately. The wastewater may contain unreacted raw materials, by-products and catalysts. Wastewater treatment can reduce environmental pollution and waste of resources.

Waste gas treatment: A certain amount of waste gas may also be generated during production, which needs to be properly treated. Waste gas may contain volatile organic compounds, sulfur oxides and other harmful substances. According to the characteristics and emissions of waste gas, different methods can be used for waste gas treatment, such as absorption, adsorption, catalytic combustion, etc. Waste gas treatment can reduce pollution in the atmosphere.

Waste residue treatment: The waste residue generated during production must be properly treated. The waste residue may contain harmful substances such as solid and chemical waste. According to the characteristics and the amount of waste residue, waste residue treatment can adopt different methods, such as incineration, landfill, recycling, etc. Waste residue treatment can reduce the pollution of the soil and groundwater environment.

Packing & Shipping of Polyoxyethylene(20)sorbitan monostearate:

 We have many different kinds of packing which depend on Polyoxyethylene(20)sorbitan monostearate quantity.
 Polyoxyethylene(20)sorbitan monostearate packing: 1kg/bottle or 25kg/barrel.
 Polyoxyethylene(20)sorbitan monostearate shipping: Once payment has been received, goods can be shipped by air, sea, or express.

Polyoxyethylene(20)sorbitan monostearate Properties    

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