The core chemical component of OP-13 is Octylphenol Polyoxyethylene (13) Ether (English name: Octylphenol Ethoxylate (13), also known as Polyoxyethylene (13) octylphenyl ether or PEG-13 Octylphenyl Ether), with CAS number 9036-19-5. This product is a single active component system, formed by connecting the hydrophobic group Octylphenol with the hydrophilic group Polyoxyethylene chain (13 EO units) through a special condensation process, making it a typical non-ionic surfactant.
From a molecular structure perspective, the octylphenol part (an alkyl chain with 8 carbon atoms attached to a benzene ring) provides hydrophobic/lipophilic properties, while the polyoxyethylene chain segment composed of 13 oxyethylene units (-CH₂CH₂O-) imparts hydrophilic properties. This specific structural combination gives OP-13 an optimized hydrophilic-lipophilic balance, enabling it to effectively reduce oil-water interfacial tension. According to product database information, this product appears as a light yellow to colorless transparent viscous liquid or paste, with a very high active matter content.
OP-13 does not contain anionic or cationic groups and does not ionize in water, thus exhibiting excellent chemical stability—it maintains stable performance over a wide range of pH levels and in high-hardness water, and has good compatibility with anionic, cationic, and other non-ionic surfactants.
| Parameter | Description |
|---|---|
| Main Ingredient | Octylphenol Polyoxyethylene (13) Ether |
| CAS Number | 9036-19-5 |
| Molecular Structure Type | Non-ionic Surfactant |
| Hydrophobic Group | Octylphenol (C₈ alkyl phenyl group) |
| Hydrophilic Group | Polyoxyethylene chain segment (13 EO units) |
| Appearance | Light yellow to colorless transparent viscous liquid or paste |
| Active Matter Content | Very high (specific value not available for this parameter) |
With its unique octylphenol polyoxyethylene ether structure, OP-13 is widely used in the following fields: as a high-efficiency degreasing core component in industrial and household cleaning agents; as a scouring agent, penetrant, and leveling agent in textile dyeing and printing; as a key emulsifying adjuvant in pesticide formulations; providing a stable emulsifying environment for monomers in emulsion polymerization; enhancing cooling and lubricating performance in metalworking fluids; as a wetting and dispersing agent in leather degreasing, papermaking aids, coatings, and inks, etc.