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BASF Lutensol A79N is a nonionic surfactant from BASF’s Lutensol A series, featuring high ethoxylation (EO≈79) for exceptional solubilization, low-foaming detergency, and thermal stability in industrial cleaners, textile auxiliaries, and agrochemical formulations.
Nonionic alcohol ethoxylate with balanced hydrophilic-lipophilic character for versatile performance across pH and temperature ranges.
Excellent wetting, emulsifying, and dispersing capabilities in aqueous systems.
Low foaming profile suitable for high-shear and industrial cleaning applications.
Biodegradable and compliant with OECD 301B screening test requirements.
Stable in hard water and compatible with anionic, cationic, and other nonionic surfactants.
Industrial and institutional cleaners (I&I), including floor cleaners and degreasers.
Agrochemical formulations as adjuvant for herbicide and fungicide spray solutions.
Textile auxiliaries for scouring, dye leveling, and dispersion of pigment pastes.
Paints and coatings as stabilizer for pigment dispersions and rheology modifier.
Home care products such as dishwashing liquids and all-purpose cleaners.
| Chemical Type | Linear alcohol ethoxylate (C13–C15, avg. 10 mol EO) |
| Product Form | Liquid |
| Appearance | Pale yellow to colorless, clear to slightly hazy liquid |
| pH (1% aqueous solution, 20 °C) | 5.5–7.0 |
| Active Content (wt %) | 98–100 |
| Cloud Point (1% aqueous solution) | 62–68 °C |
| Viscosity (20 °C) | 200–400 mPa·s |
| Odor | Characteristic mild fatty alcohol odor |
Q1: What is the primary chemical nature of Lutensol A79N?
A: Lutensol A79N is a nonionic surfactant based on alkylphenol ethoxylate chemistry, featuring a branched nonylphenol hydrophobic group and a relatively high degree of ethoxylation, contributing to its good water solubility and low-foaming profile in aqueous systems.
Q2: In which types of industrial cleaning formulations is Lutensol A79N commonly used?
A: It is frequently employed in heavy-duty liquid cleaners, metalworking fluid emulsifiers, and alkaline descaling formulations where stable emulsification of oils and greases—along with tolerance to high pH and moderate temperatures—is required.
Q3: How does Lutensol A79N perform in hard water conditions?
A: As a nonionic surfactant, Lutensol A79N exhibits good stability and performance in hard water, maintaining emulsification and detergency without significant precipitation or loss of activity, unlike many anionic counterparts.
Q4: Is Lutensol A79N suitable for low-foaming applications?
A: Yes—its molecular structure and high ethoxylate content support low foam generation, making it well-suited for applications requiring controlled foaming, such as spray cleaning, CIP systems, and high-shear industrial processes.
Q5: What guidance can be provided on handling and storage?
A: Store in original sealed containers at temperatures between 10 °C and 30 °C, away from direct sunlight and strong oxidizing agents. Ensure adequate ventilation during handling, and refer to the Safety Data Sheet for occupational hygiene and PPE recommendations.
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