Overview
4-Nonylphenol diethoxylate (CAS 20427-84-3 ), also known as Nonoxynol-2, is a short-chain ethoxylated nonylphenol surfactant used across industrial and institutional formulations.
It functions primarily as an emulsifier, dispersant, and degreasing agent where low-foam or controlled-foam performance is required for various manufacturing processes.
In textile and leather processing, it acts as a low-foaming wetting and scouring agent, improving penetration of treatment baths without generating excessive foam during the cycle.
Water treatment formulations incorporate it as an emulsifier and dispersant to stabilize active ingredients and improve surface contact on treated substrates for better efficiency.
Industrial cleaning and degreasing compounds rely on it to break down oily soils and facilitate emulsification of hydrophobic contaminants in heavy-duty maintenance environments.
In pulp and paper and printing applications, it supports ink dispersion and pitch control during processing, ensuring consistent quality and preventing buildup on machinery.
The product is supplied as a liquid at ambient conditions and is available in technical grade , which is the standard specification for industrial surfactant applications.
Bulk supply is typical in drums and IBC containers, with product specifications generally defined by HLB value, ethylene oxide content, and hydroxyl number for quality control.
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Physical Properties
| Boiling Point | 408.84°C (rough estimate) |
| Density | 0.9987 (rough estimate) |
| Color | Colourless to Pale Yellow |
| Form | Oil |
| Water Solubility | 3.702mg/L(25 ºC) |
| Refractive Index | 1.5560 (estimate) |
Safety & Handling
Warning GHS07 GHS08 GHS09 Hazard Statements H315 Causes skin irritation [Warning Skin corrosion/irritation] H319 Causes serious eye irritation [Warning Serious eye damage/eye irritation] H361 Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity] H400 Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard] H411 Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] H373 May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] H302 Harmful if swallowed [Warning Acute toxicity, oral]
Other Names
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Chemical Properties
- CAS Number
- 20427-84-3
- EC Number
- 243-816-4
- Mol. Weight
- 308.5
- Category
- Surfactants