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Highly effective anionic surfactant based on alkyl naphthalene sulfonates with excellent wetting and penetrating properties.
Offers superior compatibility with a broad range of ionic and non-ionic surfactants in complex formulations.
Delivers outstanding emulsification stability in oil-in-water systems, even under high electrolyte concentrations.
Provides low foaming characteristics, making it ideal for industrial cleaning and metalworking applications.
Exhibits good biodegradability and favorable environmental profile compared to traditional alkylbenzene sulfonates.
Industrial and institutional (I&I) hard-surface cleaners.
Metalworking fluids, including cutting and grinding oils.
Agrochemical formulations—particularly as a wetting agent and dispersant in SC and OD concentrates.
Textile auxiliaries for scouring, desizing, and dye leveling.
Paint and coating additives for pigment dispersion and substrate wetting.
| Chemical Type | Alkyl naphthalene sulfonate (ANSA) |
| Product Form | Liquid |
| Appearance | Amber to brown viscous liquid |
| pH (1% aqueous solution) | 6.5 – 8.5 |
| Solubility | Freely soluble in water and common organic solvents (e.g., alcohols, glycol ethers) |
| Active Content | ~40 wt.% (as supplied) |
| Density (20 °C) | 1.12 – 1.16 g/cm³ |
| Flash Point (PMCC) | >100 °C |
Q1: What is the primary function of Lutensit AN40 in formulations?
A: Lutensit AN40 is an amphoteric surfactant primarily used for its mildness, foaming enhancement, and viscosity-building properties—especially in aqueous personal care systems such as shampoos, body washes, and facial cleansers.
Q2: Is Lutensit AN40 compatible with anionic surfactants like SLES or SLS?
A: Yes, Lutensit AN40 exhibits excellent compatibility with common anionic surfactants and is frequently used to boost foam stability, improve mildness, and reduce irritation potential in mixed-surfactant systems.
Q3: How does pH affect the performance and stability of Lutensit AN40?
A: As an amphoteric surfactant, Lutensit AN40 displays pH-dependent charge behavior—acting cationic under acidic conditions, zwitterionic near neutral pH, and weakly anionic at higher pH. Optimal performance in most cleansing formulations is observed between pH 5.0 and 7.0.
Q4: Can Lutensit AN40 be used in leave-on skin care products?
A: Yes, due to its low irritation profile and skin-feel benefits, Lutensit AN40 is suitable for rinse-off and selected leave-on applications—subject to full formulation safety assessment and regulatory compliance for the target market.
Q5: What are the recommended storage conditions for Lutensit AN40?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, protected from direct sunlight and frost. Avoid prolonged exposure to high humidity or extreme temperature fluctuations to maintain consistency and performance.
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E-mail: wangxingqiang@ericwchem.com
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