The core chemical structure of Emulsifier A-110 consists of two parts: the hydrophobic group (lipophilic end) is naturally derived oleic acid, a monounsaturated fatty acid containing 18 carbon atoms; the hydrophilic group (hydrophilic end) is a polyoxyethylene chain (PEG chain), formed by the repeated connection of multiple ethylene oxide units (—CH₂CH₂O—). The two are connected via an ester bond, forming a typical fatty acid polyoxyethylene ester nonionic surfactant.
According to the number "110" in the product name, the average number of ethylene oxide (EO) additions for this product is approximately 10 moles. Therefore, its chemical essence can be expressed as Polyoxyethylene (10) Oleate, which is also confirmed by its aliases: Polyethylene Glycol Oleate, PEG Oleate, Polyoxyethylene Oleate. At room temperature, it appears as a light yellow to yellow transparent oily liquid, with CAS number 9004-96-0.
As a nonionic surfactant, A-110 does not ionize in aqueous solution, and its hydrophilicity depends entirely on the hydrogen bonding between the ether bonds in the polyoxyethylene chain and water molecules. This structural feature gives it excellent resistance to acids, alkalis, and high hardness water, as well as good compatibility with other types of surfactants (anionic, cationic, amphoteric).
| Parameter | Description |
|---|---|
| Chemical Name | Oleic Acid Polyoxyethylene Ester / Polyoxyethylene (10) Oleate |
| CAS Number | 9004-96-0 |
| Surfactant Type | Nonionic |
| Hydrophobic Group | Natural Oleic Acid (C18 Unsaturated Fatty Acid) |
| Hydrophilic Group | Polyoxyethylene Chain (PEG), EO Number ≈ 10 |
| Appearance | Light Yellow to Yellow Transparent Oily Liquid |
| HLB Value | Not Available (Requires Measurement) |
| Ionicity | Nonionic, Does Not Ionize in Aqueous Solution |
Based on its chemical structure as an oleic acid polyoxyethylene ester, A-110 possesses both good lipophilicity and moderate hydrophilicity, making it particularly suitable for use as an O/W (oil-in-water) emulsifier. Recommended application scenarios include: preparation of wool oil and spinning oil in the textile industry, cosmetic creams/lotions, pesticide emulsifiable concentrates/microemulsions, metalworking cutting fluids, industrial hard surface cleaners, and acrylic emulsion polymerization.
The ester bond of A-110 may undergo hydrolysis under extreme pH conditions (especially strong alkaline environments) or prolonged exposure to high temperatures. It is recommended to store it under the recommended conditions (5°C to 35°C, sealed, protected from light). When used in combination, due to its nonionic nature, it has broad compatibility, but small-scale testing is recommended to verify formulation stability.