Emulsifier S-185/O-5 (fatty alcohol polyoxyethylene ether, CAS: 68439-49-6) belongs to nonionic surfactants with an HLB value as high as 16-17. It has strong hydrophilicity and is easily soluble in water, capable of quickly dispersing and dissolving in water. The product is a white to light yellow paste at room temperature (melting point approximately 30-35°C). It is recommended to preheat and melt it with warm water (40-50°C) or stir to dissolve before adding to the formulation system to ensure uniform dispersion and fully exert its emulsifying and solubilizing effects.
This product has an active matter content of ≥99%, excellent chemical stability, resistance to acids, alkalis, and hard water, and good compatibility with anionic, cationic, and other nonionic surfactants. It can be used in combination with other surfactants for synergistic effects or used alone as a high-efficiency emulsifier directly added to the oil phase or water phase. In actual production, it is usually added to the water phase, stirred to dissolve, and then mixed with the oil phase for emulsification. It can also be added as a stabilizing component during the later stage of formulation.
Since the product has certain hygroscopicity and is irritating to skin and eyes (Category 2), protective gloves and goggles should be worn during operation, and it should be handled in a well-ventilated environment to avoid prolonged skin contact or inhalation of vapors/mists. The opened product should be used as soon as possible, and the remaining material should be resealed and stored at a temperature of 5-40°C, avoiding direct sunlight.
| Parameter | Value |
|---|---|
| Ionic Type | Nonionic |
| Appearance | White to light yellow paste |
| HLB Value | 16-17 |
| Active Matter Content | ≥99% |
| Melting Point | Approx. 30-35°C |
| pH (1% aqueous solution) | 5.0-7.0 |
| Cloud Point (°C) | >100 |
| Moisture | ≤1.0% |
| Surface Tension (0.1% aqueous solution, 25°C) | Approx. 30-35 mN/m |
| Solubility in Water | Easily soluble |
| Foaming Properties | Low to moderate |
* The above data comes from the Guoli Chemical Product Database.
The database does not contain precise recommended dosages of emulsifier S-185/O-5 for each application field. The following are general reference dosages based on the product's HLB value (16-17) and industry practice. The optimal dosage should be determined through experiments according to the actual formulation system and process conditions:
| Application Field | Recommended Dosage (% of total formulation) | Usage Instructions |
|---|---|---|
| Pesticide Emulsifiable Concentrate/Emulsion in Water/Microemulsion | 3%~8% | Used as an emulsifier in combination with other nonionic/anionic surfactants, added to the oil phase or water phase and stirred evenly |
| Industrial Hard Surface Cleaners | 1%~5% | Directly added to the water phase to dissolve; combined with alkaline additives and chelating agents to enhance degreasing and deoiling effects |
| Metalworking Fluids (Emulsifiable Oils) | 5%~15% (of concentrate) | Used as the main emulsifier, combined with anionic emulsifiers such as sodium petroleum sulfonate, dissolved in base oil with slow stirring |
| Textile Printing and Dyeing Auxiliaries (Scouring Agents, Leveling Agents) | 2%~8% | Combined with other surfactants and added to the working solution as a penetrating, emulsifying, and dispersing component |
| Leather Degreasing/Fatliquoring Agents | 2%~6% | In degreasing: directly added to the water phase; in fatliquoring: pre-mixed with oils and fats before emulsification and dispersion |
| Paints and Inks Dispersion | 0.5%~3% (based on pigment/resin weight) | Added during the grinding stage to promote pigment wetting and dispersion, or added during the letdown stage to stabilize the emulsion system |
* The above table provides general industry reference values, not precise data from the Guoli Chemical product database. Actual dosage should be verified through experiments.