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Nonylphenol Ethoxylates (NPE) are a class of nonionic surfactants produced by reacting nonylphenol with ethylene oxide, commonly used in industrial, agricultural, and cleaning applications.
They offer excellent emulsifying, dispersing, wetting, and detergent properties across a variety of systems, especially in alkaline and hard water conditions.
Nonylphenol Ethoxylates (NPE) are highly effective and cost-efficient, but their use is increasingly regulated due to environmental persistence and potential endocrine-disrupting effects.
CAS Number: 9016-45-9
EC Number: Polymer – Not assigned
Molecular Formula: C₉H₁₉C₆H₄(OCH₂CH₂)nOH (where n = 1–100)
Molecular Weight: Variable (depending on ethylene oxide chain length)
Synonyms: Nonylphenol Ethoxylates, NPE, NPEO, NPE surfactants, Nonoxynol, Alkylphenol ethoxylates, NP-9, NP-10, NP-4, Ethoxylated nonylphenol, Polyethylene glycol nonylphenyl ether, Polyethoxylated nonylphenol, Nonylphenol polyethoxylate, NP9 surfactant, NP10 emulsifier, NP6 detergent base, Nonylphenol EO adducts, Nonylphenol + EO, NPE surfactant blend, Nonylphenol PEG ether, NPE textile surfactant, NPE detergent additive, Nonylphenol ethoxylate 9016-45-9, NP ethoxylate, NPE industrial surfactant, NPE emulsifier, Nonylphenol EO surfactant, NPE dispersant, NPE for agrochemicals, NPE cleaning agent, NPE foam booster, Nonylphenol ethoxylated polymer, NP EO emulsifier, Nonylphenol condensate with EO
APPLICATIONS
Nonylphenol Ethoxylates (NPE) are widely used in industrial and institutional cleaners for their powerful grease-cutting and emulsifying properties.
Nonylphenol Ethoxylates (NPE) are included in textile processing (scouring, dyeing) as wetting and dispersing agents.
Nonylphenol Ethoxylates (NPE) are employed in agricultural formulations (herbicides, insecticides) for improved spreading and penetration on plant surfaces.
Nonylphenol Ethoxylates (NPE) are used in emulsion polymerization as nonionic emulsifiers and stabilizers.
Nonylphenol Ethoxylates (NPE) are found in oilfield chemicals, metalworking fluids, and drilling muds for dispersion and lubrication.
Nonylphenol Ethoxylates (NPE) are incorporated into paints, inks, and coatings to enhance pigment wetting and leveling.
Nonylphenol Ethoxylates (NPE) are applied in leather processing, pulp and paper manufacturing, and as deinking agents.
Nonylphenol Ethoxylates (NPE) are compatible with cationic, anionic, and nonionic ingredients, making them versatile in complex formulations.
Despite their effectiveness, NPEs are being replaced in many regions due to regulatory and environmental concerns.
Nonylphenol Ethoxylates (NPE) are used in the formulation of detergents, where they help to emulsify oils and improve cleaning power by breaking down grease and dirt.
Nonylphenol Ethoxylates (NPE) are employed in the production of industrial cleaning products, where they serve as surfactants to remove oils, dirt, and contaminants from machinery and equipment.
Nonylphenol Ethoxylates (NPE) are used in the textile industry, where they function as wetting agents and detergents to improve the cleaning and processing of fabrics.
Nonylphenol Ethoxylates (NPE) are applied in the formulation of personal care products, such as shampoos and body washes, where they help to stabilize emulsions and improve the overall texture of the product.
Nonylphenol Ethoxylates (NPE) are used in the production of pesticides and herbicides, where they act as surfactants to help improve the spreading and wetting of active ingredients on plant surfaces.
Nonylphenol Ethoxylates (NPE) are employed in the manufacture of paints and coatings, where they help improve the dispersion of pigments and enhance the overall flow properties of the product.
Nonylphenol Ethoxylates (NPE) are used in the formulation of cleaning agents for the food industry, where they help to emulsify oils and fats, aiding in the removal of contaminants from food processing equipment.
Nonylphenol Ethoxylates (NPE) are used in the production of emulsifiers for cosmetic products, where they help improve the stability and consistency of formulations such as creams, lotions, and sunscreens.
Nonylphenol Ethoxylates (NPE) are applied in the production of industrial lubricants, where they help reduce friction and improve the overall performance of the lubricant in high-stress environments.
Nonylphenol Ethoxylates (NPE) are employed in the formulation of adhesives, where they act as surfactants to improve the spreadability and bonding strength of adhesive products.
Nonylphenol Ethoxylates (NPE) are used in the production of fabric softeners, where they help enhance the softness of fabrics while improving the distribution and application of active ingredients.
Nonylphenol Ethoxylates (NPE) are used in the formulation of de-icing agents, where they help to reduce surface tension, allowing for faster and more efficient melting of ice and snow.
Nonylphenol Ethoxylates (NPE) are used in water treatment processes, where they act as dispersing agents to prevent the formation of scale and improve the efficiency of filtration systems.
Nonylphenol Ethoxylates (NPE) are applied in the production of hydraulic fluids, where they serve as emulsifiers to improve the stability of the fluid and prevent the separation of oil and water phases.
Nonylphenol Ethoxylates (NPE) are used in the formulation of oil field chemicals, where they help improve the performance of drilling fluids and enhance the stability of emulsions in harsh environments.
Nonylphenol Ethoxylates (NPE) are employed in the manufacture of polishes and waxes, where they help improve the application and smoothness of the product on various surfaces.
Nonylphenol Ethoxylates (NPE) are used in the production of car cleaning products, such as car wash detergents, where they help emulsify dirt and oils from vehicle surfaces.
Nonylphenol Ethoxylates (NPE) are applied in the production of printing inks, where they help disperse pigments and improve the flow characteristics of the ink.
Nonylphenol Ethoxylates (NPE) are used in the formulation of emulsions for agricultural sprays, where they help improve the spreading and wetting of active ingredients on plant surfaces.
Nonylphenol Ethoxylates (NPE) are used in the preparation of cosmetics, such as makeup removers, where they help emulsify oils and improve the effectiveness of the cleansing process.
Nonylphenol Ethoxylates (NPE) are employed in the production of industrial coatings, where they help improve the dispersion of pigments and enhance the smoothness and durability of the finish.
Nonylphenol Ethoxylates (NPE) are used in the formulation of cleaners for the automotive industry, where they help emulsify oils and grease, ensuring effective cleaning of vehicle parts.
Nonylphenol Ethoxylates (NPE) are used in the formulation of agrochemical products, such as fungicides, where they improve the efficacy and application of the active ingredients.
Nonylphenol Ethoxylates (NPE) are used in the preparation of non-woven fabrics, where they help to improve the texture and properties of the fabric during manufacturing.
DESCRIPTION
Nonylphenol Ethoxylates (NPE) are yellow to amber viscous liquids or waxy solids depending on ethylene oxide content.
Nonylphenol Ethoxylates (NPE) are synthesized by ethoxylating nonylphenol with varying amounts of ethylene oxide, producing a range of HLB values.
Nonylphenol Ethoxylates (NPE) are nonionic and exhibit excellent surface activity, even at low concentrations.
Nonylphenol Ethoxylates (NPE) are effective over a wide pH range and in high-temperature applications.
Nonylphenol Ethoxylates (NPE) form stable emulsions and solutions in hard water, acids, and alkalis.
Nonylphenol Ethoxylates (NPE) lower surface tension significantly, allowing for rapid wetting and penetration.
Nonylphenol Ethoxylates (NPE) are not readily biodegradable and have been linked to aquatic toxicity and hormonal disruption.
As such, they are subject to restrictions or bans in the EU, Canada, and some U.S. states.
Environmentally safer alternatives like alcohol ethoxylates are increasingly recommended.
Nonylphenol Ethoxylates (NPE) are a class of non-ionic surfactants that are produced by the ethoxylation of nonylphenol, a compound derived from petroleum, making them effective emulsifiers and wetting agents.
Nonylphenol Ethoxylates (NPE) are used in a wide variety of industrial, agricultural, and personal care products, thanks to their ability to reduce surface tension, improve spreadability, and stabilize emulsions.
Nonylphenol Ethoxylates (NPE) are highly soluble in water and are widely used in water-based formulations, where they help to improve the formulation’s texture, consistency, and overall performance.
Nonylphenol Ethoxylates (NPE) are effective in a range of applications, from cleaning products to cosmetics, where they help emulsify oils and other ingredients, ensuring uniform distribution in the final product.
Nonylphenol Ethoxylates (NPE) are known for their strong wetting and dispersing properties, which make them ideal for use in the formulation of cleaning agents, detergents, and personal care products.
Nonylphenol Ethoxylates (NPE) are used to enhance the stability of emulsions by preventing phase separation, improving the texture and shelf life of the products they are used in.
Nonylphenol Ethoxylates (NPE) are versatile ingredients, widely employed in industries ranging from food and beverages to agriculture and industrial manufacturing, providing stability and improving product performance.
Nonylphenol Ethoxylates (NPE) are typically available as liquid formulations and can vary in the degree of ethoxylation, which affects their surfactant properties and application suitability.
Nonylphenol Ethoxylates (NPE) are commonly used in the textile industry, where they help improve dye penetration and assist in the processing of fabrics by reducing surface tension and improving wetting.
Nonylphenol Ethoxylates (NPE) are an effective class of surfactants but have raised concerns due to their environmental impact, as they are known to be persistent in the environment and can accumulate in aquatic life, leading to potential toxicity.
PROPERTIES
Chemical Formula: C₉H₁₉C₆H₄(OCH₂CH₂)nOH
Molecular Weight: Variable
Common Name: Nonylphenol Ethoxylates (NPEs)
Appearance: Yellow to amber liquid or waxy solid
Odor: Mild, characteristic
Solubility: Soluble in water and organic solvents
HLB Value: Variable (typically 8–17 depending on EO content)
pH (1% solution): Approx. 6.0–8.0
Flash Point: >100°C (varies by formulation)
Viscosity: Depends on EO chain length and temperature
Boiling Point: >200°C (decomposes)
Density: Approx. 1.05 g/cm³
Stability: Stable in acid and alkaline systems
Storage Temperature: 10–30°C
Shelf Life: 12–24 months in original containers
FIRST AID
Inhalation:
Move person to fresh air.
Seek medical attention if symptoms develop.
Skin Contact:
Wash thoroughly with soap and water.
Seek medical advice if irritation occurs.
Eye Contact:
Flush eyes with water for at least 15 minutes.
Consult a physician if irritation persists.
Ingestion:
Do not induce vomiting.
Rinse mouth and drink water.
Seek medical attention if discomfort occurs.
Note to Physicians:
Treat symptomatically.
Monitor for gastrointestinal and respiratory symptoms.
HANDLING AND STORAGE
Handling:
Use gloves and eye protection in bulk or industrial settings.
Avoid breathing vapors or skin contact.
Use in well-ventilated areas.
Spill and Leak Procedures:
Absorb with inert material.
Prevent runoff into water sources.
Dispose according to local regulations.
Storage:
Store in a cool, dry, and well-ventilated area in tightly closed containers.
Keep away from strong oxidizing agents.
Protect from heat, sunlight, and contamination.
Handling Cautions:
Label clearly and observe regulatory guidelines, especially in restricted-use regions.
Use safer surfactant alternatives where possible to reduce environmental impact.
