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Broad-spectrum antimicrobial activity against bacteria, fungi, and algae.
Stable across a wide pH range (pH 4–10), ensuring compatibility in diverse formulations.
Low volatility and minimal odor, enhancing workplace safety and user acceptance.
Effective at low use concentrations, supporting cost-efficient dosing and reduced environmental load.
Compatible with common industrial surfactants, polymers, and water-based systems.
Preservation of water-based metalworking fluids.
Microbial control in industrial cooling water systems.
Protection of latex paints and architectural coatings.
Biostabilization of adhesives, sealants, and caulks.
Maintenance of microbial integrity in non-ionic cleaning formulations.
| Chemical Type | Quaternary ammonium compound (QAC) blend |
| Product Form | Liquid concentrate |
| Appearance | Clear to slightly hazy, pale yellow liquid |
| Active Content | Approx. 20% w/w benzalkonium chloride equivalent |
| pH (1% aqueous solution) | 6.0–7.5 |
| Density (20°C) | 1.02–1.06 g/cm³ |
| Solubility | Completely miscible with water |
| Storage Stability | ≥24 months in original unopened container at 5–30°C |
Q1: What is the primary mode of action of Lonza Benzocil 20 Biocide?
A: Lonza Benzocil 20 Biocide is a broad-spectrum, non-oxidizing biocide based on benzalkonium chloride (BAC) chemistry. It acts primarily by disrupting microbial cell membranes, leading to leakage of intracellular components and rapid loss of viability in bacteria, yeasts, and certain fungi.
Q2: In which types of industrial formulations is Lonza Benzocil 20 Biocide commonly used?
A: It is widely employed as a preservative in water-based industrial products such as metalworking fluids, latex paints and coatings, adhesives, construction chemicals, and cleaning concentrates—particularly where stability against Gram-positive and Gram-negative bacteria is critical.
Q3: Is Lonza Benzocil 20 Biocide compatible with common anionic surfactants and thickeners?
A: Compatibility should be evaluated case-by-case, as cationic actives like those in Benzocil 20 may interact with anionic ingredients, potentially reducing efficacy or causing formulation instability. Pre-formulation testing—including challenge testing and physical stability assessment—is strongly recommended before full-scale integration.
Q4: How does pH affect the performance of Lonza Benzocil 20 Biocide?
A: Performance is generally optimal in neutral to slightly alkaline conditions (pH 6–9). Significant deviation—especially toward strongly acidic or highly alkaline ranges—may reduce antimicrobial activity due to changes in the ionization state and stability of the active quaternary ammonium compounds.
Q5: What safety and handling considerations apply when working with Lonza Benzocil 20 Biocide?
A: As a cationic biocide, it may cause skin and eye irritation and is harmful if swallowed or inhaled in concentrated form. Users must consult the Safety Data Sheet (SDS), wear appropriate PPE—including gloves and eye protection—and ensure adequate ventilation during handling and dosing.
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