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Nonionic surfactant based on linear alcohol ethoxylate chemistry with optimized hydrophile-lipophile balance (HLB ≈ 13.5).
Excellent wetting, emulsifying, and solubilizing performance in both hard and soft water.
Good low-temperature stability and resistance to electrolytes, supporting robust formulation performance.
Biodegradable under aerobic conditions, aligned with EU Ecolabel and OECD 301 series testing guidelines.
Low foaming profile suitable for high-shear industrial cleaning and metalworking applications.
Industrial and institutional (I&I) hard surface cleaners, including floor, glass, and stainless steel formulations.
Metalworking fluids, especially semi-synthetic and soluble oil concentrates requiring stable emulsion and residue control.
Agrochemical adjuvants for enhancing active ingredient dispersion and foliar uptake.
Textile auxiliaries such as scouring and dyeing assistants in cotton and polyester processing.
Paint and coating additives for pigment wetting, defoaming synergy, and viscosity stabilization.
| Chemical Type | Linear alcohol ethoxylate (C12–C14, ~9 EO units) |
| Product Form | Pale yellow to amber viscous liquid |
| Appearance (25 °C) | Clear to slightly hazy, homogeneous liquid |
| Active Content (wt. %) | ≥ 98.0% |
| pH (1% aqueous solution) | 5.5 – 7.0 |
| Cloud Point (1% solution, °C) | 62 – 68 |
| HLB Value | 13.2 – 13.8 |
| Primary Applications | Emulsification, wetting, solubilization in industrial cleaning and process formulations |
Q1: What is the primary chemical nature of Lutensol TO 129?
A: Lutensol TO 129 is a nonionic surfactant based on a linear alcohol ethoxylate structure, featuring a C13–C15 fatty alcohol backbone with an average of approximately 9 moles of ethylene oxide. Its balanced hydrophilic-lipophilic character provides good water solubility and effective surface activity across a range of temperatures and pH conditions.
Q2: In which types of industrial cleaning formulations is Lutensol TO 129 commonly used?
A: It is widely employed in heavy-duty liquid detergents, metal cleaning agents, and industrial pre-rinse or post-rinse solutions—particularly where low-foaming performance, good soil suspension, and compatibility with builders and chelating agents are required. Its stability in alkaline media makes it suitable for high-pH cleaning systems.
Q3: How does temperature affect the performance of Lutensol TO 129 in aqueous systems?
A: As a typical ethoxylated alcohol, Lutensol TO 129 exhibits moderate cloud point behavior—its solubility decreases gradually above a certain temperature, which can be leveraged in temperature-triggered formulation effects such as controlled emulsification or phase separation. Optimal performance is generally maintained below its cloud point, typically in the range of 50–70 °C depending on concentration and electrolyte content.
Q4: Is Lutensol TO 129 compatible with common anionic and cationic surfactants?
A: It demonstrates good physical compatibility with many anionic surfactants (e.g., LAS, AES) in formulated systems, especially at neutral to alkaline pH. Compatibility with cationic species is more limited and should be evaluated case by case, as interactions may lead to precipitation or reduced efficacy. Blending trials under representative formulation conditions are recommended.
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