Product Category: Industrial Surfactants / Detergent Raw Materials
Chemical Type: Nonylphenol Ethoxylate
Alternative Names: NP9 / NPE-9 / Nonyl Phenol Ethoxylate 9EO
Surfactant Type: Non-ionic
Appearance: Pale yellow liquid
Product Overview
NP9 is a general-purpose non-ionic surfactant containing approximately nine moles of ethylene oxide.
It offers excellent wetting, detergency and emulsification and is more hydrophilic than NP6, making it particularly useful in water-based cleaning and industrial surfactant systems
Typical Technical Characteristics
| Property | Typical Reference |
| SKU | MCS-N5 |
| Chemical Family | Nonylphenol Ethoxylate |
| Ethoxylation | Approx. 9 EO |
| Active Matter | Typical commercial grades around 100% |
| HLB | Approx. 12.9–13.0 |
| Cloud Point | Approx. 54°C |
| Density at 20°C | Approx. 1.055 g/mL |
| pH – 1% Solution | Approx. 6 |
| Physical Form | Pale yellow liquid |
Dow’s TERGITOL NP-9 reference specifies nine moles of ethylene oxide, HLB approximately 12.9, cloud point approximately 54°C and density approximately 1.055 g/mL.
Applications
- Industrial detergents
- Heavy-duty cleaning
- Wetting agents
- Textile processing
- Paper manufacture
- Paint and coating formulations
- Metalworking fluids
- Dust-control formulations
- Emulsification systems
Key Benefits
- Excellent wetting
- Strong detergency
- Good emulsification
- Non-ionic compatibility
- Good rinseability
- Useful in aqueous formulations
Regulatory Note
Regulatory requirements for nonylphenol ethoxylates vary according to market and end use. Suitability should be confirmed for the customer’s intended application.
