According to the technical data from Guo Li Chemical, the core advantage of oleyl alcohol polyoxyethylene ether OV-5 (oleth-5) lies in the unique performance balance provided by its molecular structure derived from natural oleyl alcohol, making it more competitive than ordinary synthetic alcohol ether products in many application fields. The specific advantages are reflected in the following aspects:
### 1. Unique lipophilic-hydrophobic balance and high emulsifying power
Compared with common fatty alcohol polyoxyethylene ethers (such as AEO series), the hydrophobic group of OV-5 is derived from octadecenol (oleyl alcohol). Its long carbon chain and unsaturated double bond structure endow it with stronger lipophilicity.
* **HLB value of about 9**: This value falls within the optimal range for water-in-oil (W/O) emulsifiers, making it an efficient primary or auxiliary emulsifier for preparing stable W/O emulsions (such as skin care creams and sunscreens).
* **Stronger oil solubility**: Excellent solubility in the oil phase can significantly reduce the oil-water interfacial tension, forming stable and fine emulsions and providing an excellent skin feel.
### 2. Excellent and balanced comprehensive performance
OV-5 performs well in several key performance indicators and is a versatile nonionic surfactant.
| Performance Indicator | Parameter Value | Advantage Interpretation |
| :--- | :--- | :--- |
| **Active Content** | ≥99% | High purity, few impurities, stable performance, and less dosage required. |
| **HLB Value** | 9 | Precisely positioned for W/O emulsification, ideal for cream and lotion formulations. |
| **Cloud Point** | 55~65℃ | Moderate, easily soluble in oil at room temperature, with a wide application process window. |
| **Surface Tension** | ~30 mN/m | Strong wetting ability, can quickly spread on solid surfaces, good permeability. |
| **Critical Micelle Concentration (CMC)** | About 40 mg/L | Achieves excellent emulsification and dispersion effects at low concentrations, high cost performance. |
| **Foam Characteristics** | Low foaming | Especially suitable for formulations requiring quick defoaming or low foam environments, such as industrial cleaning and metalworking fluids. |
| **Ion Type** | Nonionic | Excellent compatibility with anionic, cationic, and amphoteric additives, stable over a wide pH range (acid and alkali resistant) and in hard water. |
### 3. Wide application adaptability
Thanks to its molecular characteristics derived from natural oleyl alcohol, OV-5 shows better compatibility and final product performance than ordinary synthetic ether products in many technical fields.
* **Cosmetics field**: As a W/O emulsifier, it imparts a unique soft, non-greasy skin feel to creams and lotions, which is difficult to achieve with many synthetic ester emulsifiers.
* **Industrial cleaning field**: Strong emulsification and dispersion ability for mineral oils, animal and vegetable oils, especially suitable for heavy oil stain cleaning.
* **Textile and metal processing**: Good permeability in scouring agents, excellent anti-color staining effect in leveling agents; in metal cutting fluids, it combines emulsifying and boundary lubrication functions, helping to protect cutting tools.
* **Pesticide formulations**: Effectively disperse high-viscosity active ingredients, help the liquid form a uniform film on crop surfaces, improve efficacy and rainfastness.
### Notes
* **Operational Safety**: OV-5 is a low-toxicity product, but it is irritating to skin and eyes (GHS Category 2). Wear protective gloves, goggles, and protective clothing during operation.
* **Environmental Discharge**: This product is harmful to aquatic life with long-lasting effects. Do not discharge it into water bodies.
If you need application testing for specific formulations or request samples, I can transfer you to a sales engineer.
