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Broad-spectrum antimicrobial activity against bacteria, fungi, and algae.
Stable in high-hardness and high-pH cooling water systems.
Low toxicity profile with favorable environmental and handling safety characteristics.
Compatible with common corrosion inhibitors and scale control agents.
Effective at low dosage rates (typically 50–200 ppm active ingredient).
Industrial closed-loop and open recirculating cooling water systems.
Process water circuits in power generation and petrochemical facilities.
Chilled water systems in commercial HVAC applications.
Once-through and low-flow water systems requiring intermittent biocide treatment.
Supplemental biocide in systems where oxidizing biocides are limited by material compatibility.
| Chemical Type | Heterocyclic nitrogen-based non-oxidizing biocide |
| Product Form | Aqueous solution |
| Appearance | Clear, light amber liquid |
| Active Ingredient Concentration | Approx. 20% w/w |
| pH (1% aqueous solution) | 7.0 – 8.5 |
| Density (20°C) | 1.03 – 1.06 g/cm³ |
| Solubility in Water | Completely miscible |
| Primary Applications | Cooling water system microbiological control |
Q1: What is the primary mode of action of Dow AQUCAR DB 20 Biocide?
A: Dow AQUCAR DB 20 Biocide functions as a broad-spectrum preservative through controlled release of active biocidal components, primarily targeting bacteria, yeasts, and molds in aqueous systems. Its formulation is designed to provide stable, long-lasting protection without compromising product stability or performance.
Q2: In which types of industrial formulations is Dow AQUCAR DB 20 Biocide commonly used?
A: It is widely applied in water-based coatings, adhesives, construction chemicals, metalworking fluids, and cleaning concentrates—particularly where low-odor, non-volatile, and pH-stable preservation is required. It performs well across neutral to mildly alkaline pH ranges and demonstrates compatibility with many common surfactants and thickeners.
Q3: How should Dow AQUCAR DB 20 Biocide be incorporated into a formulation?
A: It is typically added during the final stage of manufacturing, after high-shear mixing or heat treatment, to preserve biocidal efficacy. Dosage depends on formulation requirements but generally ranges from 0.1% to 2% by weight—optimization is recommended via challenge testing under representative storage and use conditions.
Q4: Is Dow AQUCAR DB 20 Biocide compatible with other common preservatives or antimicrobial agents?
A: It can be used in combination with certain complementary preservatives—such as isothiazolinones or formaldehyde releasers—to broaden the antimicrobial spectrum or enhance efficacy against resistant strains. However, compatibility testing is essential to avoid antagonism or physical instability.
Q5: What safety and handling considerations apply to Dow AQUCAR DB 20 Biocide?
A: As with all biocidal products, appropriate personal protective equipment—including gloves and eye protection—should be worn during handling. The material should be stored in its original container, away from direct sunlight and extreme temperatures, and kept tightly sealed to maintain performance integrity.
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