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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 aqueous systems across a broad pH range.
Low foaming profile suitable for high-shear and industrial cleaning applications.
Good biodegradability and favorable ecotoxicological profile in accordance with OECD 301 standards.
Stable in hard water and compatible with common anionic, cationic, and amphoteric surfactants.
Industrial and institutional cleaners (I&I), including floor cleaners and degreasers.
Agrochemical formulations requiring stable oil-in-water emulsions (e.g., EC, SE, and OD concentrates).
Textile auxiliaries such as scouring and dyeing assistants.
Paints and coatings for pigment dispersion and latex stabilization.
Household liquid detergents and dishwashing formulations where low foam and high grease removal are critical.
| Chemical Type | Linear alcohol ethoxylate (C13–C15, avg. 7 EO units) |
| Product Form | Pale yellow to amber viscous liquid |
| Appearance | Clear to slightly hazy, homogeneous liquid at 25 °C |
| Active Content (wt. %) | ≥ 68% |
| pH (1% aqueous solution, 25 °C) | 5.5 – 7.0 |
| Cloud Point (1% aqueous solution) | ≈ 68 °C |
| HLB Value | ≈ 13.5 |
| Solubility | Freely soluble in water and common organic solvents (e.g., ethanol, glycol ethers) |
Q1: What is the primary chemical nature of Lutensol GD 70?
A: Lutensol GD 70 is a nonionic surfactant based on a branched, alcohol-ethoxylated glycerol diether structure, offering enhanced hydrolytic stability and low foaming characteristics compared to linear alkyl ethoxylates.
Q2: In which types of industrial cleaning formulations is Lutensol GD 70 most commonly applied?
A: It is widely used in low-foam, high-efficiency alkaline and neutral-pH cleaners for metal parts cleaning, CIP (clean-in-place) systems, and precision cleaning applications where residue control and compatibility with chelants or silicates are critical.
Q3: How does Lutensol GD 70 perform in hard water conditions?
A: Due to its nonionic character and ether linkage design, Lutensol GD 70 maintains good solubility and performance in moderately hard water without significant precipitation or efficiency loss—making it suitable for formulations intended for varied regional water qualities.
Q4: Is Lutensol GD 70 compatible with common anionic surfactants and builders?
A: Yes, it demonstrates broad compatibility with anionic surfactants (e.g., LAS, AES), phosphonates, sodium metasilicate, and sodium carbonate, supporting synergistic detergency in multi-component industrial cleaner concentrates.
Q5: What are typical dosage guidelines for Lutensol GD 70 in ready-to-use cleaning solutions?
A: Dosage depends on formulation requirements and soil load, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in final use solutions—to balance cleaning efficacy, foam control, and cost efficiency.
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