According to the technical data from Guoli Chemical, Emulsifier A-103 (oleic acid polyoxyethylene ester) has **core competitive advantages of extremely high monoester content (≥95%), excellent chemical stability, precise HLB value (11.5), and wide multi-field applicability** compared to similar products on the market, which makes it particularly outstanding in terms of emulsification efficiency, formulation stability, and process simplification.
### Detailed Description
The emulsifier A-103 produced by Guoli Chemical is a nonionic surfactant with the chemical composition of oleic acid polyoxyethylene ester. Compared with ordinary similar products, its advantages are not only reflected in a single performance but also in the balance of comprehensive application effects:
1. **High monoester content, stronger emulsifying power**
Through advanced synthesis processes, the monoester content of A-103 is as high as 95% or more, with diester content controlled below 2%. High monoester content means a more regular molecular structure, stronger directional adsorption capacity, and the ability to form a denser and more stable interfacial film at the oil-water interface, thereby achieving efficient emulsification with a lower addition amount and obtaining a finer and more stable emulsion.
2. **Excellent acid, alkali, and hard water stability**
Although oleic acid esters hydrolyze under strong acids and alkalis, A-103 exhibits excellent chemical stability in conventional application pH ranges and hard water environments. This means products formulated with it (such as cutting fluids and cleaning agents) have a longer service life and more reliable on-site performance, and are less likely to fail due to fluctuations in water quality or pH.
3. **Precise HLB value and controllable hydrophilic-lipophilic balance**
The HLB value of A-103 is 11.5. Emulsifiers in this range are very suitable for preparing oil-in-water (O/W) emulsions. Key indicators such as its cloud point (70-85°C) and surface tension (30-35 mN/m) are precisely controlled, which provides formulation engineers with highly predictable performance, enabling precise compounding and reducing the cost of R&D trial and error.
4. **Wide application adaptability and synergy**
As a nonionic surfactant, A-103 exhibits a broad application platform characteristics:
- **Multifunctionality**: A single agent can provide emulsification, wetting, dispersion, solubilization, and even lubrication effects, simplifying the raw material management of complex formulations.
- **Excellent compatibility**: It can synergize well with anionic, cationic, and other nonionic surfactants, providing great convenience for constructing high-performance composite systems.
- **Low foaming property**: It inherently has low foam, making it very suitable for industrial operation scenarios that require rapid rinsing, pump circulation, or have anti-foaming requirements.
### Core Performance Data Comparison Advantages
The following technical parameters reflect the precise quality control of A-103:
| Technical Parameter | Index Range | Advantage Interpretation |
| :--- | :--- | :--- |
| **Monoester Content** | **≥95%** | **Much higher than general similar products** (usually 50-80%), providing stronger emulsifying power and stability. |
| **HLB Value** | **11.5** | Precisely positioned in the high-efficiency range of O/W emulsifiers, with good hydrophilic-lipophilic balance. |
| **Acid Value** | ≤2 mg KOH/g | Very few unreacted fatty acids, low irritation, high product purity, more stable formulation presentation. |
| **Active Content** | ≥99% | Almost no diluents or fillers, high solids content, outstanding cost performance. |
| **Surface Tension** | 30~35 mN/m | High efficiency, can quickly wet substrates and disperse systems. |
| **Iodine Value** | 40~60 g I₂/100g | Retains oleic acid unsaturated double bonds, imparting good skin feel and low-temperature fluidity. |
### Application Suggestions and Scenario Advantages
Leveraging the above advantages, A-103 outperforms ordinary products in key areas:
- **Cosmetic creams/lotions**: Due to its high monoester content, the resulting cream is finer and glossier, with a light and non-greasy skin feel, and it is not prone to layering or precipitation during long-term storage.
- **Metalworking fluids**: As the core emulsification and lubrication component of full-synthetic and semi-synthetic systems, its high stability can resist microbial attack and metal ion interference, significantly extending the life of cutting fluids, while providing certain boundary lubrication protection to improve the surface finish of workpieces.
- **Pesticide emulsifiable concentrates/microemulsions**: The HLB value of 11.5 provides excellent compatibility and solubilization effects for various pesticide technical materials (such as EC), and the formed diluted emulsion automatically disperses well with good wetting and spreading properties, favoring efficacy.
- **Industrial hard surface cleaners**: Efficiently emulsifies oil stains, has good fluidity even at low temperatures, and the low-foaming property facilitates subsequent high-pressure mechanical rinsing.
### Precautions
- Although chemically stable, in strongly alkaline systems with high pH, its ester groups still have a risk of hydrolysis under long-term high temperature; stability tests should be conducted during formulation development.
- Operation should still follow GHS warnings: **May cause skin and eye irritation**, requiring appropriate protective gloves and goggles. Please refer to the Safety Data Sheet (SDS) for details.
