Compared to products in the same series such as Peregal O-3, O-9, and O-10, which use C12-14 alcohols as raw materials, Peregal O-20 uses C16-18 (cetearyl alcohol) as the initiator, with a longer carbon chain that provides stronger hydrophobic anchoring ability. When emulsifying mineral oils, animal and vegetable oils, and organic solvents, the interfacial film formed by O-20 is denser, and the emulsion stability is significantly superior to short-chain products, making it especially suitable for preparing highly stable O/W emulsion systems.
Regarding the EO number (ethylene oxide addition number), the 20 EO units of O-20 are at the "golden balance point" in the Peregal series: compared to O-9 and O-10, it has stronger hydrophilicity, better water solubility, and higher operational convenience; compared to O-80, it retains more lipophilicity, and its emulsification efficiency for oily substances is not weakened by excessive hydrophilicity. This allows O-20 to effectively disperse dyes in textile leveling while maintaining good affinity for fibers, preventing color spots and uneven dyeing.
The nonionic nature of Peregal O-20 gives it outstanding resistance to hard water, acids, and alkalis within the series, and it can be freely compounded with anionic, cationic, and amphoteric surfactants with significant synergistic effects. In fields such as pesticide formulations, industrial cleaning, and daily chemical creams and emulsions, where emulsification stability and compatibility requirements are demanding, O-20 is one of the best comprehensive performance choices.
| Product Model | Starting Alcohol | EO Number (approx.) | Appearance at 25°C | Key Property Comparison |
|---|---|---|---|---|
| Peregal O-3 | C12-14 | 3 | Light yellow liquid | Strong lipophilicity, weak emulsifying power, mostly used as intermediate or oil-soluble emulsifier |
| Peregal O-9 | C12-14 | 9 | White paste | Good wetting and penetration, but emulsification stability is inferior to O-20 |
| Peregal O-10 | C12-14 | 10 | White to light yellow paste | General-purpose emulsifying dispersant, moderate emulsifying power for oils and fats |
| Peregal O-15 | C16-18 | 15 | White to slightly yellow paste/solid | Hydrophilic-lipophilic balance near equilibrium, emulsifying power close to O-20 but slightly weaker hydrophilicity |
| Peregal O-20 | C16-18 | 20 | Milky white to light yellow waxy solid | Excellent O/W emulsifying ability, optimal hydrophilic-lipophilic balance, outstanding leveling performance |
| Peregal O-80 | C16-18 | 80 | White to slightly yellow flake solid | Extremely strong hydrophilicity, good solubility, but emulsifying power reduced due to insufficient lipophilicity |
Textile Dyeing and Printing: As a leveling agent and dispersant, Peregal O-20 is the preferred auxiliary for direct dyes and vat dyes. The recommended dosage is 0.5%-2.0% of the dye liquor weight, effectively slowing down the dyeing rate and preventing uneven coloration.
Pesticide Formulation Emulsifier: In the preparation of EC emulsifiable concentrates and aqueous emulsions, O-20 can be used alone or compounded with other emulsifiers (such as Nongru 500# series), with a recommended dosage of 3%-8%, forming an emulsion with excellent dilution stability.
Daily Chemical Creams and Emulsions: As a primary O/W emulsifier or co-emulsifier, the recommended dosage is 1%-5%, and it can be compounded with nonionic or anionic emulsifiers to give the cream a fine and glossy texture.