The chemical name of MOA-9 (AEO-9) is C12-14 alcohol polyoxyethylene (9) ether, which is a high-polymerization-degree fatty alcohol polyoxyethylene ether nonionic surfactant. Its molecular structure consists of two parts: the hydrophobic end is a straight-chain fatty alcohol of C12-C14 (derived from fatty alcohol obtained by hydrogenation of natural oils), and the hydrophilic end is a polyoxyethylene chain segment with an average polymerization degree of 9 (formed by the addition polymerization of 9 ethylene oxide units).
The CAS number is 68439-50-9. The product appears as a colorless to slightly yellow transparent liquid or white paste. The product has high active matter content (usually ≥99%). Due to the presence of ether bonds and terminal hydroxyl groups in its molecular structure, it has good solubility in water, as well as excellent emulsifying, wetting, penetrating, dispersing, and cleaning functions.
As a nonionic surfactant, MOA-9 does not ionize in aqueous solution, and its surface activity completely relies on the hydrophilic effect of the polyoxyethylene chain in the molecule. This enables it to exhibit excellent chemical stability in acidic, alkaline, and hard water media, and it can be widely compounded with anionic, cationic, and other nonionic surfactants.
| Parameter | Value/Description |
|---|---|
| Chemical Name | C12-14 alcohol polyoxyethylene (9) ether |
| CAS Number | 68439-50-9 |
| Hydrophobic Group | C12-C14 straight-chain fatty alcohol |
| EO Addition Number | 9 (average polymerization degree) |
| Ion Type | Nonionic surfactant |
| Active Matter Content | ≥99% |
| Appearance | Colorless to slightly yellow transparent liquid or white paste |