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Nonionic surfactant based on linear alcohol ethoxylate with optimized hydrophilic-lipophilic balance (HLB ≈ 13.5) for broad compatibility.
Excellent emulsification and solubilization performance in aqueous systems across varying pH and electrolyte concentrations.
Low-foaming profile suitable for high-shear industrial cleaning and metalworking applications.
Good biodegradability (OECD 301E compliant) and favorable toxicological profile for sustainable formulation design.
Thermally stable up to 80 °C and compatible with common anionic, cationic, and amphoteric surfactants.
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 corrosion inhibition support.
Agrochemical adjuvants for enhancing active ingredient dispersion and foliar uptake in aqueous spray solutions.
Textile auxiliaries such as scouring and dyeing assistants where low foam and high wetting efficiency are critical.
Paint and coating additives for pigment wetting, dispersion stabilization, and viscosity control in waterborne systems.
| Chemical Type | Linear alcohol ethoxylate (C13–C15, ~10 EO units) |
| Product Form | Liquid |
| Appearance | Pale yellow to colorless, clear to slightly hazy liquid at 25 °C |
| pH (1% aqueous solution, 25 °C) | 5.5–7.0 |
| Active Content (wt. %) | 99.0–100.0 |
| Cloud Point (1% aqueous solution) | 68–72 °C |
| HLB Value | ≈13.5 |
| Density (20 °C) | 1.02–1.04 g/cm³ |
Q1: What is the primary function of Lutensol XA 40 in industrial formulations?
A: Lutensol XA 40 is a nonionic surfactant based on ethoxylated linear alcohols, primarily used as an emulsifier, solubilizer, and wetting agent in aqueous systems. Its balanced hydrophilic-lipophilic character supports stable oil-in-water emulsions and enhances compatibility between polar and nonpolar components.
Q2: Is Lutensol XA 40 suitable for low-temperature applications?
A: Yes — due to its relatively low cloud point and good water solubility across a broad temperature range, Lutensol XA 40 maintains performance in formulations intended for use at ambient to moderately low temperatures, including cold-process cleaning and agrochemical concentrates.
Q3: How does Lutensol XA 40 compare to other Lutensol XA grades in terms of hydrophilicity and application scope?
A: As a mid-range grade in the XA series, Lutensol XA 40 offers intermediate hydrophilicity — more water-soluble than XA 30 but less than XA 50. This makes it especially versatile for applications requiring moderate foaming, good emulsion stability, and compatibility with electrolytes or other surfactants in complex blends.
Q4: Can Lutensol XA 40 be used in formulations exposed to hard water?
A: Yes — as a nonionic surfactant, Lutensol XA 40 exhibits good tolerance to calcium and magnesium ions, making it suitable for use in hard water environments without significant loss of emulsifying or wetting performance, unlike many anionic surfactants.
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