OPE-105 is a nonionic surfactant with octylphenol as the hydrophobic group and an ethylene oxide addition number of 10.5. Its core uses are as a high-efficiency emulsifier, wetting penetrant, and dispersant, widely applied in textiles, metal processing, industrial cleaning, pesticide formulations, leather, and papermaking.
Detailed Description
OPE-105 (CAS No.: 121809-82-3), chemical name octylphenol polyoxyethylene (10.5) ether, is a high-performance nonionic surfactant produced by Haian Guoli Chemical Co., Ltd. Its molecular structure features octylphenol as the hydrophobic tail chain, modified by polyoxyethylenation with 10.5 ethylene oxide (EO) units, giving the product excellent hydrophilic-lipophilic balance characteristics with an HLB value of 13.5, classifying it as a hydrophilic emulsifier. The product appears as a colorless to light yellow viscous liquid with an active content of ≥98%, easily soluble in water and various organic solvents.
The core advantage of this product lies in its outstanding emulsifying ability—it can form fine and stable emulsions of mineral oils, animal and vegetable oils, and various organic solvents, significantly enhancing the long-term storage stability of formulations. Additionally, it has the ability to rapidly reduce surface tension (surface tension of a 1% aqueous solution is only 30~32 mN\/m), resulting in excellent wetting and penetration performance, enabling rapid deep penetration into fabrics, metal surfaces, and porous materials. Furthermore, OPE-105 has excellent chemical stability under acidic, alkaline, and high-hardness water conditions, is not prone to hydrolysis or deactivation, and is a low-foaming surfactant suitable for dynamic cleaning scenarios such as spray and ultrasonic cleaning.
From a safety perspective, OPE-105 is an industrial chemical classified under GHS as Acute Toxicity (Oral) Category 4, Skin Irritation Category 2, Serious Eye Damage Category 1, and is toxic to aquatic life with long-lasting effects (H411). During operation, protective gloves, goggles, and protective clothing must be worn at all times, and discharge into the aquatic environment is strictly prohibited.
Technical Parameters
| Parameter Item | Indicator Data |
|---|
| Product Name | OPE-105 (Octylphenol Polyoxyethylene Ether) |
| CAS No. | 121809-82-3 |
| Ionic Type | Nonionic Surfactant |
| Appearance (25℃) | Colorless to light yellow viscous liquid |
| Active Content | ≥98.0% |
| HLB Value | 13.5 |
| Cloud Point (1% aqueous solution) | 65~75℃ |
| pH (1% aqueous solution) | 6.0~8.0 |
| Surface Tension (1%, 25℃) | 30~32 mN\/m |
| Critical Micelle Concentration (CMC) | 0.05~0.1 mmol\/L |
| Hydroxyl Value | 80~90 mgKOH\/g |
| Density (25℃) | ~1.06 g\/cm³ |
| Kinematic Viscosity (25℃) | 200~400 mm²\/s |
| Flash Point | >200℃ |
| Moisture Content | ≤0.5% |
| Acid Value | ≤1.0 mgKOH\/g |
| Iodine Value | ≤1.0 gI₂\/100g |
| Chemical Stability | Stable in acids, alkalis, and hard water |
| Foaming Characteristic | Low foaming |
| Solubility | Easily soluble in water and organic solvents |
Application Recommendations
Based on product data provided by Guoli Chemical, the main application areas and recommendations for OPE-105 are as follows:
- Textile Industry: As a scouring penetrant and leveling aid, it rapidly penetrates and emulsifies waxes and oil stains during desizing and scouring processes of cotton and linen fibers, improving capillary effect and whiteness; it can also be used in dyeing to promote uniform dye adsorption.
- Metalworking: Used in formulations of cutting fluids, grinding fluids, and rust preventives, providing lubrication, cooling, and corrosion protection; in water-based rust prevention systems, it acts as a corrosion inhibitor, adsorbing on metal surfaces to form a protective layer.
- Industrial Cleaning: Formulating high-efficiency degreasing cleaners to quickly remove mineral oils, animal and vegetable oils, and dirt from metal and plastic surfaces, suitable for spray, ultrasonic, and other ambient or heated cleaning processes.
- Pesticide Formulations: As an emulsifier for emulsifiable concentrate and emulsion formulations, enabling oil-soluble active ingredients to spontaneously disperse in water to form stable emulsions; also as a dispersant for aqueous suspensions and wettable powders, preventing pesticide particle aggregation and sedimentation.
- Leather Processing: Used in the degreasing step of raw hides and wet blues, penetrating into fiber interstices to emulsify natural oils, improving leather softness and dyeing uniformity.
- Paper Industry: In deinking during waste paper recycling, it promotes the separation and suspension of ink from fiber surfaces, improving pulp whiteness; also can be applied as an antistatic agent on paper or synthetic fiber surfaces.
- Industrial Coatings: As a wetting and dispersing component in waterborne and solvent-based coatings, it promotes pigment wetting, prevents floating and flooding, and improves film adhesion to metal and plastic substrates.
Precautions
- Safety Hazards: Harmful if swallowed (H302), causes skin irritation (H315), causes serious eye damage (H318), toxic to aquatic life with long-lasting effects (H411). During operation, nitrile rubber protective gloves, chemical safety goggles, and impermeable protective clothing must be worn.
- Storage Conditions: Store in a cool, dry, well-ventilated warehouse, with a recommended temperature range of 0℃ to 30℃. Keep containers tightly closed, away from heat sources and open flames, and strictly separate from food, feed, oxidizers, and strong acids and alkalis.
- Environmental Protection: Do not discharge the product into sewers,
