Oleic Acid Polyoxyethylene Ester A-105 (OEO-105) is a nonionic surfactant with an HLB value of 10.5. It appears as a light yellow to yellow liquid or paste (may be pasty at low temperatures), with active content ≥99%, and is easily soluble in water. Its molecular structure combines ester groups and polyoxyethylene chains, providing outstanding emulsifying and dispersing capabilities for various oils, mineral oils, and organic solvents, along with excellent wetting and spreading properties.
In practical applications, A-105 can be used flexibly: it can be directly added to the water phase and dissolved under stirring; or it can be pre-mixed with oil phase components, followed by water addition for phase inversion emulsification to obtain a finer and more stable emulsion. If the product becomes pasty due to low-temperature storage, it can be warmed to 25~35°C or heated in a warm water bath before use to restore fluidity, without affecting product performance.
This product has low foam (according to the Guoli Chemical database, foam property is "low foam"), making it especially suitable for industrial scenarios where foam generation is undesirable. Being nonionic, it can be used in combination with anionic, cationic, and other nonionic surfactants for synergistic effects. It should be noted that the database indicates this product is "not alkali-resistant", so compatibility testing is required before use in strongly alkaline systems.
| Technical Indicator | Parameter Value |
|---|---|
| HLB Value | 10.5 |
| Active Content | ≥99% |
| Cloud Point (1% Aqueous Solution) | 72~76°C |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Acid Value | ≤5 mgKOH/g |
| Saponification Value | 75~85 mgKOH/g |
| Density | 0.98~1.02 g/cm³ |
| Water Solubility | Easily soluble in water |
| Foam Property | Low foam |
| Alkali Resistance | Not alkali-resistant |
Data source: Guoli Chemical Product Database
The following dosage reference values are empirical ranges commonly used in the industry. Due to significant variations in actual formulation systems, emulsification targets, and process conditions, it is recommended to determine the optimal dosage through small-scale experiments:
| Application Field | Recommended Dosage (Percentage of Total Formulation) | Usage Description |
|---|---|---|
| Textile Printing and Dyeing Auxiliaries | 1%~5% | Directly dissolve in water as a component of scouring penetrant or leveling agent |
| Metalworking Fluids | 5%~15% | Pre-mix with base oil, then add water for emulsification to prepare emulsified oil or semi-synthetic cutting fluid |
| Pesticide Emulsifiers | 3%~10% | Mix with pesticide technical material and solvent to form emulsifiable concentrate, or for preparation of emulsion in water |
| Industrial Cleaners | 2%~8% | Compounded into water-based cleaning formulations to enhance degreasing ability |
| Leather Degreasing Agents | 1%~5% | Formulated into working solution for soaking or degreasing processes of raw hides |
| Cosmetic Emulsifiers | 1%~5% | As an O/W emulsifier for cream and lotion formulations |
Note: The above dosage ranges are reference values; actual usage should be verified by experiments. The database does not have exact recommended dosages for each application; the above data is based on general industry experience.
A-105 (HLB=10.5), when used alone for emulsification, is suitable as the primary emulsifier for oil-in-water (O/W) emulsion systems. When compounded with low-HLB surfactants (such as Span series, HLB about 4~5), the HLB value of the system can be precisely adjusted to meet the emulsification requirements of different oils. It is recommended to gradually adjust the ratio during compounding to find the optimal ratio point for emulsion stability.