Peregal O-80 is a white to slightly yellow flaky or waxy solid. Before use, it should be dissolved in warm water (50–60°C) to prepare an aqueous solution of the desired concentration, and then added to the formulation system according to process requirements. Its HLB value is as high as 18.5, making it a typical high-HLB O/W emulsifier, with a recommended dosage in various industries typically ranging from 0.5% to 5% of the total formulation.
Detailed Description
Peregal O-80 (Fatty alcohol polyoxyethylene (80) ether) is a solid at room temperature, with a melting point between 45 and 55°C. Therefore, the correct dissolution method is the first step in use: add the weighed Peregal O-80 into warm water at 50~60°C, and stir slowly until it is fully dissolved and the aqueous solution becomes clear and transparent. Avoid dissolving directly with boiling water, and do not heat at high temperatures for prolonged periods to prevent local overheating that may degrade the active ingredients. The dissolved aqueous solution can be directly used in subsequent compounding or cooled to room temperature for later use. Since the product is hygroscopic, opened materials should be used promptly, and any unused portion must be sealed immediately for storage.
As a nonionic surfactant, Peregal O-80 exhibits excellent chemical compatibility and can be used in combination with anionic, cationic, and other nonionic surfactants. It also maintains good stability in high-concentration electrolyte, acid, alkali, and hard water environments. In practical formulation design, it is often paired with low-HLB emulsifiers (such as Span series, monoglycerides, etc.) to adjust the HLB value to match the target oil phase, thereby obtaining a more stable and finer O/W emulsion system. It is recommended to conduct small-scale tests before compounding to optimize the emulsifier ratio and process parameters.
It is worth emphasizing that Peregal O-80 is a low-foam surfactant with a cloud point greater than 100°C (1% aqueous solution). This means it will not fail due to cloud point precipitation in high-temperature aqueous systems, making it particularly suitable for process scenarios requiring high-temperature operation. Meanwhile, in applications requiring low foam, such as industrial cleaning and spinning oil agents, Peregal O-80 can effectively reduce foam problems and minimize the use of defoamers.
Technical Parameters
| Parameter Item | Value |
|---|
| Appearance | White to slightly yellow flaky or waxy solid |
| Ionic Type | Nonionic |
| HLB Value | 18.5 |
| Active Content | ≥99% |
| Melting Point | 45~55°C |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Cloud Point (1% Aqueous Solution) | >100°C |
| Solubility | Easily soluble in water, aqueous solution clear and transparent |
| Foam Characteristics | Low foam |
| Surface Tension (1g/L, 25°C) | 35~40 mN/m |
| Critical Micelle Concentration (CMC) | Approx. 1×10⁻⁵ mol/L |
| Moisture Content | ≤1.0% |
| Density (25°C) | Approx. 1.06 g/cm³ |
| Flash Point | >200°C |
| Packaging Specification | 20kg woven bag |
Application Recommendations
The following are reference usage methods and recommended dosages for Peregal O-80 in various typical application fields (Data source: Guoli Chemical product database and industrial practice summary; specific dosages should be determined through small-scale tests based on the formulation system):
- Textile Dyeing and Printing (Leveling Agent/Penetrant): Recommended dosage: 0.5~2 g/L (based on treatment bath). During the dyeing process, dissolve it in water before adding dyes, then add it together with the dye bath into the dyeing machine. Its wetting and dispersing ability promotes uniform dye adsorption and uptake, reducing color spots and shade differences.
- Daily Chemical Creams/Lotions (O/W Emulsifier): Recommended dosage: 2%~5% (based on total formulation). Heat Peregal O-80 and oil phase components separately to 65~75°C. After dissolving Peregal O-80 in the water phase, slowly add the oil phase into the water phase with homogenization, and cool to form a fine and stable O/W cream or lotion.
- Pesticide Formulations (Emulsifier): Recommended dosage: 3%~8% (based on total formulation). When preparing emulsifiable concentrates, mix Peregal O-80 with the active ingredient and solvent uniformly. For preparing emulsions in water or suspension concentrates, dissolve it in the water phase and then participate in high-shear emulsification to improve self-emulsifying dispersion performance during field dilution.
- Industrial Cleaners (Wetting and Solubilizing Component): Recommended dosage: 1%~5%. Compounded with alkaline auxiliaries, chelating agents, etc., it significantly enhances the ability to detach and suspend oil stains, suitable for cleaning hard surfaces such as metal, glass, and plastic.
- Metalworking Fluids/Water-Based Cutting Fluids: Recommended dosage: 2%~6%. Used as an emulsifier together with base oils, rust inhibitors, extreme pressure additives, etc., to build a stable emulsion system, improve cooling and lubrication effects, and extend the service life of the working fluid.
- Emulsion Polymerization (Emulsifying Dispersant): Recommended dosage: 1%~3% of the total monomer amount. Dissolve in the water phase before the polymerization reaction to ensure uniform nucleation of particles and control of narrow particle size distribution.
- Paper Deinking: Recommended dosage: 0.2%~1% (relative to dry waste paper). Add during the pulping stage to promote detachment of ink from fiber surfaces and dispersion suspension, improving deinking efficiency and pulp brightness.
- Leather Degreasing/Fatting: Recommended dosage for degreasing: 0.5%~2% (based on raw hide weight); for fatting/stuffing: 0.5%~3%, imparting a soft and full hand feel to the leather.
Precautions
- Dissolution Operation: The solid material should be dissolved in warm water at 50~60°C, avoiding high-temperature boiling. Stir continuously during dissolution until the solution is completely clear. Do not add the dry powder directly into cold water.
- Moisture-Proof Storage: The product is hygroscopic. After opening, seal immediately and store in a cool, dry place (temperature 0~40°C, relative humidity ≤70%), away from strong oxidizing agents and strong acids/alkalis.
- Personal Protection: It is recommended to wear protective gloves and goggles during operation to avoid dust inhalation and prolonged skin contact. The workplace should be well-ventilated.
- Compounding Notes: When compounding with anionic surfactants, compatibility tests are recommended to ensure system stability. Conduct small-scale and scale-up tests before large-scale compounding.
- Waste Disposal: Wastewater and waste liquid should not be discharged directly into sewers or natural water bodies. They should be disposed of by qualified treatment agencies in accordance with local regulations.
