Polyoxyethylene Lauryl Ether LAE-9 is a nonionic surfactant with an HLB value of approximately 13.6, featuring good water solubility and O/W emulsifying ability. Its usage and dosage highly depend on the specific application scenario: when used as the primary emulsifier, the dosage is relatively high; when used as an auxiliary wetting or solubilizing component, the dosage is relatively low. In actual formulation development, the dosage is influenced by multiple factors such as the type and content of the oil phase, system pH, temperature conditions, and synergistic effects with other surfactants. Therefore, it is recommended to optimize the best addition ratio through orthogonal experiments or gradient experiments.
In terms of operation, LAE-9 is a light yellow to yellow transparent liquid at room temperature (may appear as a paste at low temperatures) and is soluble in water, ethanol, and other polar solvents. During formulation, it is recommended to pre-disperse or dissolve it in an appropriate amount of warm water (40~50°C) first, then add it to the main system and stir evenly. For high-content formulations, it can be premixed with the oil phase before emulsification; when used as a solubilizer, LAE-9 is usually mixed with the fragrance or oily components to be solubilized first, then water is slowly added and stirred to obtain a clear and transparent solubilized system.
The following are general reference dosages for various application scenarios of LAE-9 based on the Guoli Chemical product database (data sourced from industry experience, for reference only):
| Application Field | Functional Role | Reference Dosage |
|---|---|---|
| Daily chemical creams/lotions | O/W primary emulsifier | 1.0%~5.0% |
| Lotions/shampoos | Solubilizer for fragrances and oily ingredients | 0.5%~3.0% |
| Household liquid detergents | Detergency/wetting component | 2.0%~8.0% |
| Industrial liquid detergents | Emulsifying/degreasing component | 3.0%~10.0% |
| Textile leveling agent (working solution) | Leveling/penetrating auxiliary | 0.5~2.0 g/L |
| Pesticide emulsifiable concentrate/emulsion | Environmentally friendly emulsifier | 5.0%~15.0% |
| Metalworking fluids | Wetting/emulsifying auxiliary | 1.0%~5.0% |
| Leather fatliquoring agent | Emulsifying/dispersing carrier | 2.0%~8.0% |
The following key parameters can help assess the suitability of LAE-9 in formulations (data source: Guoli Chemical product database):
| Parameter Name | Value |
|---|---|
| Appearance | Light yellow to yellow transparent liquid or paste (varies with temperature) |
| Active content | ≥99% |
| HLB value | 13.6 |
| pH value (1% aqueous solution) | 5.0~7.0 |
| Cloud point (1% aqueous solution) | >100℃ |
| Surface tension (1% aqueous solution, 25℃) | Approx. 30 mN/m |
| Critical micelle concentration (CMC, 25℃) | Approx. 0.1 g/L |
| Freezing point | <-5℃ |