OS-15 (AEO-15), chemically known as fatty alcohol polyoxyethylene (15) ether, is a nonionic surfactant. The product appears as a white waxy solid at room temperature (melting point approximately 20~25°C, sourced from the Guoli Chemical Product Database). Therefore, it must be heated to above 25°C to melt into a flowable liquid before use, and then added according to the formulation ratio. It is recommended to preheat the product drum in a 25~35°C water bath or constant temperature environment until it completely changes into a transparent to slightly yellow liquid, then weigh and use. Due to its slight hygroscopicity, it should be used as soon as possible after melting, and the container should be kept sealed.
The product has an HLB value of 14.5 (sourced from the Guoli Chemical Product Database), making it a hydrophilic nonionic surfactant that is easily soluble in water and can be directly dispersed or dissolved in the aqueous phase. In compounding systems, OS-15 can be flexibly combined with anionic, cationic, and other nonionic surfactants for synergistic effects. In typical industrial formulations, it can be directly added to the aqueous phase with stirring for dissolution, or premixed with other surfactant components before being added to the main system. If the formulation contains salts or alkaline additives, OS-15 still maintains excellent stability under such conditions.
| Parameter | Value | Data Source |
|---|---|---|
| HLB Value | 14.5 | Guoli Chemical Database |
| Melting Point | Approximately 20~25°C | Guoli Chemical Database |
| Active Matter Content | ≥99% | Guoli Chemical Database |
| Cloud Point (5% NaCl) | 81~85°C | Guoli Chemical Database |
| pH of 1% Aqueous Solution | 5.0~7.0 | Guoli Chemical Database |
| Surface Tension (0.1%, 25°C) | Approximately 30 mN/m | Guoli Chemical Database |
| Critical Micelle Concentration (CMC) | Approximately 0.005% (by weight) | Guoli Chemical Database |
| Foaming Characteristics | Low to medium foam | Guoli Chemical Database |
| Solubility | Easily soluble in water | Guoli Chemical Database |
The Guoli Chemical Product Database does not provide specific recommended dosages for each application field. The following are industry general reference dosages based on this product type (nonionic surfactant with HLB≈14.5):
| Application Field | Recommended Dosage (wt%) | Usage Instructions |
|---|---|---|
| Industrial and household detergents | 2%~8% | Heat to melt, then add to the aqueous phase, and compound with other surfactants |
| Textile dyeing leveling agent | 1%~5% (based on dye weight) | Add as an aqueous solution to the dye bath during the initial dyeing stage |
| Coating/ink dispersant | 0.2%~2% | Add during the grinding stage, premix with pigment before grinding |
| Paper deinking agent | 0.1%~0.5% | Add diluted solution during the pulping process |
| Leather processing auxiliary | 0.5%~3% | Add to the working solution during soaking or degreasing processes |
| Metal surface cleaner | 2%~6% | Formulate cleaning working solution with alkaline additives |
| Cosmetic emulsifier (creams/lotions) | 1%~5% | As O/W emulsifier, can be added to either oil phase or water phase |
| Pesticide emulsifier and wetting agent | 3%~10% (based on total formulation weight) | Used for preparing pesticide emulsifiable concentrate or emulsion in water |
Note: The above dosages are industry general reference ranges. Actual dosages should be determined through experimental optimization based on specific formulation systems, process conditions, and performance requirements. The low foaming characteristic of OS-15 makes it particularly suitable for spray cleaning and mechanical cleaning scenarios requiring low foam. Its low CMC value (approximately 0.005%) means it can exert surface activity at very low concentrations.