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Broad-spectrum efficacy against bacteria, fungi, and algae in industrial water systems.
Stable across a wide pH range (pH 4–9), maintaining biocidal activity under varying process conditions.
Low foaming formulation suitable for high-shear and recirculating cooling water applications.
Compatible with common corrosion inhibitors and scale inhibitors used in closed-loop and open cooling systems.
Non-oxidizing chemistry that avoids oxidative degradation of system components and polymers.
Cooling water systems in power generation and HVAC facilities.
Process water circuits in petrochemical and refining operations.
Recirculating water systems in manufacturing plants with heat exchangers and towers.
Make-up water treatment for industrial closed-loop systems.
Preservation of aqueous-based metalworking fluids during storage and use.
| Chemical Type | Isothiazolinone-based non-oxidizing biocide |
| Product Form | Aqueous solution |
| Appearance | Clear, light yellow liquid |
| Primary Applications | Cooling water, process water, and metalworking fluid preservation |
| Key Features | Broad-spectrum, low-foaming, pH-stable, non-oxidizing |
| Storage Stability | 12 months at 5–30 °C in original sealed container |
| Density (20 °C) | Approx. 1.08 g/cm³ |
| Solubility | Miscible with water in all proportions |
Q1: What is Dow UCARCIDE 250 Biocide primarily used for?
A: Dow UCARCIDE 250 Biocide is a broad-spectrum preservative designed to inhibit the growth of bacteria, yeasts, and molds in water-based industrial formulations, including coatings, adhesives, construction chemicals, and metalworking fluids.
Q2: Is UCARCIDE 250 compatible with common formulation ingredients?
A: Yes, UCARCIDE 250 exhibits good compatibility with many anionic, nonionic, and amphoteric surfactants, thickeners, and pH adjusters commonly found in industrial systems—though compatibility testing under actual formulation conditions is recommended prior to full-scale use.
Q3: How should UCARCIDE 250 be added to a formulation?
A: It is typically added during the cool-down phase or post-emulsification stage to minimize thermal degradation. Addition at ambient temperature and thorough mixing ensure uniform distribution and optimal efficacy.
Q4: Does UCARCIDE 250 provide long-term preservation stability?
A: When properly incorporated and dosed, UCARCIDE 250 delivers robust, long-lasting antimicrobial protection against microbial spoilage throughout the shelf life of formulated products, especially when combined with good manufacturing hygiene practices.
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