Peregal O-20 (CAS No.: 68439-49-6), with the chemical name C16-18 fatty alcohol polyoxyethylene (20) ether, has a molecular formula of RO(CH₂CH₂O)ₙH (R=C16-18, n=20) and an average molecular weight of approximately 1100-1200. It appears as a white to slightly yellow waxy solid or paste, with a melting point of about 40-50°C and a flash point greater than 150°C (closed cup). It is a low-toxicity, non-flammable, and non-explosive product.
As a classic nonionic surfactant, this product's core advantage lies in its wide pH adaptability and excellent compatibility. It can be used in combination with anionic, cationic, and amphoteric surfactants, maintaining stable surface activity and superior emulsifying ability in hard water, acidic, and alkaline solutions. In textile dyeing and printing, it has good affinity for direct dyes and vat dyes, effectively slowing down the dye uptake rate and ensuring level dyeing results.
In terms of physicochemical properties, Peregal O-20 is a low-foaming type (foam height of only 10-20mm in a 1% aqueous solution at 50°C), has low surface tension (approximately 30-35 mN\/m), and a very low critical micelle concentration (approximately 0.007%). These attributes make it exhibit efficient wetting, penetrating, and detergency capabilities in industrial cleaning, pesticide emulsification, and daily chemical products.
| Parameter Item | Specification\/Value | Parameter Item | Specification\/Value |
|---|---|---|---|
| Appearance | White to slightly yellow waxy solid | Ion Type | Nonionic |
| Active Content | ≥99% | Solid Content | ≥99% |
| HLB Value | 15-16 | Cloud Point | 88-95°C |
| Hydroxyl Value | 52±3 mgKOH\/g | Acid Value | ≤1.0 mgKOH\/g |
| Saponification Value | ≤2.0 mgKOH\/g | Iodine Value | ≤2 gI₂\/100g |
| pH Value (1% Aqueous Solution) | 5.0-7.0 | pH Value (5% Aqueous Solution) | 5.0-7.0 |
| Moisture Content | ≤1.0% | Free Alcohol | ≤1.0% |
| Melting Point | Approximately 40-50°C | Flash Point (Closed Cup) | >150°C |
| Density | Approximately 1.0 g\/mL | Unsaturation | ≤0.08 mol\/kg |
| Kinematic Viscosity (1% Aqueous Solution, 25°C) | Approximately 1-2 mm²\/s | Low Shear Viscosity (1% Aqueous Solution, 25°C) | Approximately 1.5 mPa·s |
| Refractive Index (Molten State) | nD25 Approximately 1.45-1.46 | Surface Tension | Approximately 30-35 mN\/m |
| Critical Micelle Concentration (CMC) | Approximately 0.007% (w\/v) | Penetration Power (1% Aqueous Solution) | Approximately 200-300 seconds |
| Foaming Property (1% Aqueous Solution, 50°C) | Low foam, approximately 10-20mm | Alkali Resistance | Stable in concentrated alkali solutions |
| Solubility | Easily soluble in water, ethanol, acetone | Chemical Stability | Resistant to acids, alkalis, salts, and hard water |
| Hygroscopicity | Slightly hygroscopic | Amine Value | ≤0.5 mgKOH\/g |
| Tertiary Amine Content | None | Free Phosphoric Acid | ≤0.1% |
| Heavy Metals (as Pb) | ≤10 mg\/kg | Arsenic | ≤2 mg\/kg |
| Molecular Weight | Approximately 1100-1200 | Packaging Specification | 20kg woven bag |
Peregal O-20 serves as an efficient leveling agent and dispersant in the textile dyeing and printing industry. The recommended dosage is generally 0.5%-2% (based on the weight of the dye liquor), effectively preventing color patches and spots. In pesticide formulations, it acts as an emulsifier for oil-in-water emulsions. The recommended dosage is 2%-5% of the total formula weight, significantly reducing the oil-water interfacial tension and enhancing the wetting and spreading ability of the liquid. In daily chemical creams and lotions, as an O\/W emulsifier, the recommended dosage is 1%-3%, imparting a fine and stable texture to the product. In industrial and household liquid detergents, as a detergency component, the addition amount can be controlled at 1%-5%, quickly stripping and