What are the physicochemical technical parameters of Peregal O-80?

Peregal O-80 is a nonionic surfactant with a high HLB value (18.5). It appears as a white to slightly yellow flake or waxy solid, and exhibits significant physicochemical characteristics such as high cloud point, easy solubility in water, low foaming, and resistance to acids and alkalis, with excellent overall performance.

Detailed Description

The chemical name of Peregal O-80 is C16-18 fatty alcohol polyoxyethylene (80) ether, with CAS number 68439-49-6, molecular weight of approximately 3800, belonging to the category of fatty alcohol polyoxyethylene ether nonionic surfactants with a high degree of ethylene oxide (EO) addition. The polyoxyethylene chain segment in its molecule accounts for a significant proportion (n≈80), endowing the product with extremely high hydrophilicity and water solubility—it is readily soluble in water at room temperature, with a clear and transparent aqueous solution. The cloud point of a 1% aqueous solution exceeds 100°C, indicating that it can maintain good dissolution and active state in high-temperature aqueous systems without easy precipitation.

In terms of key physical property parameters, the product has an HLB value as high as 18.5, making it a typical oil-in-water (O/W) emulsifier with extremely strong hydrophilicity. Its 1g/L aqueous solution (25°C) has a surface tension of 35~40 mN/m, and the critical micelle concentration (CMC) is approximately 1×10⁻⁵ mol/L, indicating that it can effectively reduce the surface tension of water at relatively low concentrations. The product has a melting point of 45~55°C, a flash point greater than 200°C, a density of about 1.06 g/cm³ (25°C), and strong hygroscopicity, requiring moisture-proof storage. The foaming characteristic is low foaming, giving it a natural advantage in applications requiring rapid defoaming or low-foam processes.

On the chemical indicator level, the pH values of 1% and 5% aqueous solutions of the product are both stable at 5.0~7.0, close to neutral, with little impact on the acidity or alkalinity of the formulation system; acid value ≤1.0 mg KOH/g, saponification value ≤2.0 mg KOH/g, iodine value ≤2, indicating extremely low content of free acids and ester impurities, with a molecular structure primarily composed of saturated fatty chains. The chemical properties are stable, and the activity remains unchanged under conventional acid-base conditions. The hydroxyl value is approximately 15 mg KOH/g, moisture ≤1.0%, free alcohol ≤3%, effective content and solid content both ≥99%, with high purity. In terms of safety and environmental protection, heavy metals (as Pb) ≤10 mg/kg, arsenic ≤2 mg/kg, 28-day biodegradation rate >60%, easily biodegradable, meeting environmental requirements.

Technical Parameters