Emulsifier OS (Sodium secondary alkyl sulfonate) and emulsifier MS-1 (Octylphenol polyoxyethylene ether maleate) are two non-ionic/anionic surfactant products launched by Guoli Chemical. Both have excellent emulsifying, wetting, and dispersing capabilities, occupying a core position in the field of pesticide formulation processing, and are also widely used in fine chemical fields such as textile printing and dyeing, industrial cleaning, and emulsion polymerization.
Emulsifier OS is known for its strong emulsifying power, rapid wetting and penetration, and outstanding dispersion properties, with good stability to hard water and electrolytes, making it particularly suitable for systems that require rapid formation of stable emulsions. Emulsifier MS-1 features excellent comprehensive emulsifying performance, outstanding wetting and spreading properties, and excellent compatibility with various pesticide technical materials and solvents, adapting to a variety of oil phase systems and helping to delay formulation stratification.
In practical applications, the two products are often used together to achieve synergistic effects, significantly improving the stability, dispersibility, and efficacy of pesticide formulations, while reducing the amount of organic solvent used, in line with the development trend of green pesticide formulations.
| Industry | Process Type | Applicable Product | Core Function |
|---|---|---|---|
| Pesticide Formulation Processing | Emulsifiable concentrate (EC) processing | OS / MS-1 | Acts as a high-efficiency emulsifier, enabling rapid dissolution and emulsification of the pesticide technical material, improving the stability and dispersibility of the EC, and ensuring uniform adhesion of the spray liquid to the target |
| Emulsion in water (EW) preparation | OS / MS-1 | Provides excellent emulsification and stabilization, allowing the oil phase to disperse uniformly as fine droplets in the water phase, preventing stratification and demulsification, extending shelf life, and reducing organic solvent usage | |
| Suspension concentrate (SC) system | OS / MS-1 | Improves wetting and dispersion of solid technical material particles in water, prevents sedimentation and agglomeration, optimizes fluidity for easy dilution and mixing | |
| Microemulsion (ME) construction | OS / MS-1 | Facilitates formation of thermodynamically stable transparent or translucent microemulsions under low-energy emulsification conditions, enhancing transdermal penetration and systemic translocation of the formulation | |
| Compounding and tank-mix adjuvant | OS / MS-1 | Good compatibility when formulating multiple active ingredients, reducing physicochemical antagonism between technical materials, improving spreading and adhesion of spray droplets on leaf surfaces | |
| Textile Printing and Dyeing | Compounding of pretreatment and finishing auxiliaries | OS / MS-1 | Used as components in penetrants, leveling agents, softeners, etc., to improve textile processing performance |
| Fine Chemicals | Industrial cleaning and emulsion polymerization | OS | Utilizes emulsifying, dispersing, and penetrating capabilities in industrial cleaner formulations and emulsion polymerization systems |
In the formulation of pesticide emulsifiable concentrates and emulsions in water, it is recommended to compound emulsifier OS and MS-1 in an appropriate ratio to achieve synergistic effects. Typically, OS provides rapid emulsification and strong penetration, while MS-1 enhances long-term stability and spreading performance. The specific ratio should be adjusted according to the type of pesticide technical material, oil phase system, and formulation target, and it is recommended to determine the optimal dosage through small-scale trials.
In suspension concentrate systems, the two products can be used as wetting and dispersing agents to effectively improve the suspension state of solid technical material particles in water, prevent sedimentation and agglomeration, and optimize the fluidity of the formulation. In the construction of microemulsions, they can assist in forming thermodynamically stable transparent or translucent microemulsions under low-energy emulsification conditions, enhancing transdermal penetration and systemic translocation of the formulation.