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Highly effective broad-spectrum biocide against bacteria, fungi, and algae in industrial water systems.
Stable performance across a wide pH range (pH 4–9) and tolerant to common water treatment additives.
Low-dosage efficacy — typically applied at 50–200 ppm active ingredient for system protection.
Non-oxidizing chemistry minimizes corrosion risk to ferrous and non-ferrous metals.
Compatible with common scale inhibitors, dispersants, and anionic/cationic polymers.
Cooling water systems in power generation and HVAC applications.
Process water circuits in pulp and paper manufacturing.
Recirculating water systems in chemical processing plants.
Once-through and closed-loop industrial water systems requiring microbiological control.
Make-up water treatment where biofilm prevention is critical.
| Chemical Type | Isothiazolinone-based biocide (active ingredients: 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one) |
| Product Form | Aqueous solution |
| Appearance | Clear, light yellow to amber liquid |
| Primary Applications | Industrial water treatment for microbial control |
| Key Features | Broad-spectrum, non-oxidizing, low-foaming, pH-stable |
| Benefits | Reduces biofilm formation, extends equipment life, maintains heat transfer efficiency |
| Storage Stability | 12 months minimum when stored at 5–30°C in original unopened container |
Q1: What is Dow KATHON WT Biocide primarily used for?
A: Dow KATHON WT Biocide is a broad-spectrum antimicrobial preservative designed for use in water-based industrial formulations, including metalworking fluids, latex paints, adhesives, and other water-rich systems where microbial growth poses stability, odor, or performance risks.
Q2: How does Dow KATHON WT Biocide differ from other isothiazolinone biocides?
A: Dow KATHON WT Biocide features a proprietary blend of active isothiazolinone components formulated specifically for enhanced stability and efficacy in challenging water-based industrial environments—particularly those with high pH, elevated temperatures, or significant organic loading common in metalworking and coating applications.
Q3: Is Dow KATHON WT Biocide compatible with common formulation ingredients?
A: Yes—it demonstrates good compatibility with many anionic, nonionic, and amphoteric surfactants, thickeners, corrosion inhibitors, and defoamers typically found in industrial fluid formulations. Compatibility testing under actual use conditions is still recommended to confirm performance and stability.
Q4: What is the typical dosage range for effective microbial control?
A: Effective dosage generally ranges from 0.1% to 2% by weight of the final formulation, depending on system composition, microbial challenge level, and required preservation duration. It is typically used at low concentrations and often applied as a maintenance dose following initial treatment.
Q5: Are there handling or safety considerations users should be aware of?
A: As with all industrial biocides, appropriate personal protective equipment (PPE) such as gloves and eye protection should be worn during handling. The product may cause skin and eye irritation, and users should consult the Safety Data Sheet (SDS) for detailed guidance on safe storage, handling, and emergency response.
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E-mail: wangxingqiang@ericwchem.com
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