Other Anionic Surfactant
Your Professional Other Anionic Surfactant Supplier
Founded in 2015, SHANDONG HUNTEC CHEMICAL CO., LTD specializes in the research, development, and manufacturing of surfactant-related products for the home care, cleaning, and personal care industries. With a professional team of around 100 employees, the company has established stable production and quality management systems to support long-term cooperation with global customers. Our production base is located in Heze City, close to Qingdao Port, providing convenient logistics for international shipments. Our main products include Sodium Lauryl Sulfate (SLS), Sodium Alpha-Olefin Sulfonate (AOS), cationic softeners, and customized surfactant solutions.
Why Choose Us
Our Certificate
Our factory is ISO9001:2008, REACH, and FAMIQS certified. Every batch is inspected by SGS before leaving the factory to ensure reliable quality.
Global Market Presence
Our products are trusted in markets including the Americas, Southeast Asia, and Russia, with 2025 sales reaching $5 million.
Advanced Production Facilities
Equipped with film sulfonation units, dual-flow spray drying units, and a scrape-film drying unit, our factory supports an annual capacity of 10,000 MT.
Customized Solutions
We provide customized surfactant products based on customer requirements, including different formulations and specifications for cleaning and personal care applications.
Sodium Octyl Sulfate
Sodium octyl sulfate (SOS) is an anionic surfactant used in a wide variety of industries and applications. It is a useful chemical to study the selective enrichment of albumin in biological samples. It is also used as a wetting agent, dispersant, or emulsifier in the production of paints, coatings, and inks. Sodium octyl sulfate can aid in the dispersion of pigments and improve the flow and leveling properties of the final product. It may act to inhibit the activity of enzymes, disrupt the structure of proteins, and alter the activity of membrane proteins. Sodium octyl sulfate can also increase the permeability of cell membranes and interfere with the function of cell receptors.
|
Item |
Standard(%) |
Result(%) |
|
Appearance |
Yellow transparent liquid |
Yellow transparent liquid |
|
Color |
≤200 |
100 |
|
Active Substance, % |
38.00-40.00 |
39.23 |
|
Solid content, % |
45.00-55.00 |
48.68 |
|
PH |
8.00-11.00 |
8.31 |
Properties of Sodium Octyl Sulfate
Appearance
Sodium octyl sulfate typically appears as a pale yellow to amber-colored, viscous liquid with a syrupy consistency. It has a characteristic odor that may range from faintly sweet to slightly sulfurous, depending on the purity and manufacturing process.
Solubility
Due to its anionic structure, sodium octyl sulfate demonstrates excellent solubility in both hard and soft water, resisting precipitation in the presence of calcium and magnesium ions. It is also highly soluble in ethanol, methanol, and other polar organic solvents, making it adaptable for multi-phase formulations.
Surface Activity
This compound significantly reduces the surface tension of water, enhancing wetting, spreading, and penetration on various surfaces. This property is crucial in cleaning applications where rapid substrate coverage is required
Stability
Sodium octyl sulfate is chemically stable under normal storage and usage conditions. However, it is incompatible with cationic surfactants (which can cause precipitation) and may form insoluble complexes with divalent metal ions such as Ca²⁺ and Mg²⁺ in concentrated solutions.
pH Range
The compound remains stable across a wide pH range (approximately 4–10), with optimal surfactant activity observed in slightly acidic to neutral conditions (pH 5–8). It begins to hydrolyze under strongly acidic or alkaline conditions, reducing effectiveness.
Foaming Properties
Sodium octyl sulfate generates rich, stable, and creamy foam, which is highly desirable in personal care products such as shampoos, facial cleansers, and body washes. The foam is less voluminous than sodium lauryl sulfate (SLS) but often considered more luxurious in texture.
Applications of Sodium Octyl Sulfat
Oil and Gas Industry
In the oil and gas sector, sodium octyl sulfate plays a critical role in drilling and extraction processes. It is widely used to formulate stable emulsions that enhance the performance of drilling fluids. These emulsions help in cooling and lubricating drill bits, carrying cuttings to the surface, and maintaining wellbore stability.
Detergency and Wetting
Sodium octyl sulfate acts as a powerful wetting agent and detergent in industrial cleaning applications. It facilitates the removal of oils, greases, and particulate contaminants from mineral surfaces, metal parts, and industrial equipment.
Textile Industry
In textile manufacturing, sodium octyl sulfate serves as a dyeing assistant that significantly improves the uniformity and intensity of color application. It enhances the wetting and penetration of dyes into natural fibers such as wool, cotton, and silk.
Scientific Research
It is important to clarify that while sodium dodecyl sulfate (SDS) is a well-known surfactant used in protein denaturation and gel electrophoresis, sodium octyl sulfate also has niche applications in biochemical and cellular research due to its milder surfactant properties compared to SDS.
Composition of Sodium Octyl Sulfate
Hydrophilic Head
The hydrophilic portion of sodium octyl sulfate consists of a negatively charged sulfonate group (–SO3–). This group readily interacts with water molecules through hydrogen bonding and dipole interactions, allowing the compound to dissolve in aqueous environments.
Hydrophobic Tail
The hydrophobic tail is an octyl chain—a straight-chain alkyl group containing eight carbon atoms (C8H17–). This nonpolar segment repels water but readily dissolves in oils, fats, and organic solvents.
Sodium Cation (Counterion)
The sodium ion (Na+) serves as the counterion that neutralizes the negative charge of the sulfonate group, forming a stable salt. It is typically introduced during synthesis using sodium hydroxide (NaOH) or sodium carbonate (Na2CO3).
Linking Group (Ester Bond)
The sulfate ester linkage (–O–SO2–O–) connects the octyl chain to the sulfonate group. This bond is formed through a sulfation reaction between 1-octanol and a sulfuric acid derivative.
Synthesis Steps of Sodium Octyl Sulfate
Sulfation
Slowly add 1-octanol to chilled concentrated sulfuric acid under stirring (exothermic reaction). Maintain temperature below 40°C to avoid side reactions.
01
Reaction Completion
Heat the mixture gently (80–100°C) for 2–3 hours to complete sulfation, forming octyl hydrogen sulfate.
02
Neutralization
Cool the mixture and slowly add aqueous sodium hydroxide to neutralize the acid, forming sodium octyl sulfate.
03
Extraction
Transfer the mixture to a separatory funnel, extract with diethyl ether, wash the organic layer with water, and dry over anhydrous magnesium sulfate.
04
Purification
Remove ether by rotary evaporation (never open flame!) and purify the residue via recrystallization or column chromatography.
05
Safety Measures
Personal Protective Equipment (PPE): Always wear chemical-resistant gloves, safety goggles, and a face mask or respirator to prevent skin contact, eye exposure, and inhalation of dust or mist.
Ventilation: Work in a well-ventilated area or use fume hoods when handling large quantities to minimize vapor accumulation.
No Eating or Drinking: Prohibit food, beverages, and smoking in handling areas to avoid accidental ingestion.
Spill Management: Clean spills immediately using absorbent materials and dispose of waste according to local hazardous material regulations.
Storage: Store in a cool, dry place away from direct sunlight and incompatible substances like strong oxidizers.
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