UNISURF NP 4 (NONYLPHENOL + 4 EO)
General Information
UNISURF NP 4 is a non-ionic surfactant based on nonylphenol ethoxylated with an average of 4 moles of ethylene oxide. It provides excellent emulsification, wetting, and dispersing properties and is widely used in industrial cleaning, agrochemicals, and textile processing. While not readily biodegradable, it is highly effective in demanding applications requiring strong performance.
Product Properties
| Property | Description |
|---|---|
| Chemical Name | Nonylphenol Ethoxylate (4EO) |
| INCI Name | Nonoxynol-4 |
| CAS Number | 9016-45-9 |
| Appearance | Clear to light yellow liquid |
| Odor | Mild characteristic |
| Solubility | Soluble in water and solvents |
| pH (1% solution) | 6.0 – 8.0 |
| Active Content (%) | ~100 |
| Biodegradability | Not readily biodegradable |
Technical Specifications
| Parameter | Value |
| Density (20°C) | 1.02 – 1.05 g/cm³ |
| Viscosity (25°C) | 100 – 250 mPa.s |
| Cloud Point (1% in water) | ~40°C |
| Shelf Life | Minimum 24 months |
| Storage | 10°C – 30°C |
Application Areas
| Industry | Examples | Function |
| Industrial Cleaning | Degreasers, heavy-duty cleaners | Emulsifier, wetting agent |
| Agrochemicals | Pesticide formulations, adjuvants | Dispersing, solubilizing agent |
| Textiles | Scouring agents, dyeing auxiliaries | Wetting, emulsifying |
Advantages
Excellent emulsifying and wetting power
High performance in alkaline and acidic systems
Strong solubilizing ability for oils and greases
Compatible with anionic and non-ionic surfactants
Versatile for use in multiple industrial sectors
Packaging & Storage
| Feature | Specification |
| Packaging Options | 200 kg drums / 1000 kg IBCs |
| Shelf Life | Minimum 24 months |
| Storage Conditions | Store in a cool, dry place (10–30°C) |
| Transport Classification | Non-hazardous liquid |
Safety & Handling
Avoid contact with eyes and prolonged skin exposure
Use appropriate protective equipment during handling
Store sealed and away from sources of ignition and heat
Dispose of according to local environmental regulations
Conclusion
UNISURF NP 4 is a powerful non-ionic surfactant designed for applications that require strong emulsification, wetting, and dispersing capabilities. While not biodegradable, it delivers high performance and versatility in industrial, agrochemical, and textile applications.
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