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Broad-spectrum efficacy against bacteria, fungi, and algae in industrial water systems.
Stable performance across a wide pH range (pH 4–9) and tolerant to varying water hardness and temperature.
Low foaming formulation suitable for high-shear and recirculating cooling water applications.
Compatible with common scale inhibitors, corrosion inhibitors, and other water treatment additives.
Non-oxidizing chemistry enabling use where chlorine or bromine may cause material degradation or by-product formation.
Cooling water systems in HVAC and industrial power plants.
Process water circuits in paper manufacturing and pulp mills.
Recirculating water in metalworking fluid systems.
Make-up water treatment for closed-loop chilled water systems.
Industrial wastewater reuse and storage basins requiring microbial control.
| Chemical Type | Isothiazolinone-based biocide (active ingredients: 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one) |
| Product Form | Liquid concentrate |
| Appearance | Clear, light yellow to amber liquid |
| pH (as supplied) | 2.5–4.0 |
| Density (20°C) | 1.08–1.12 g/cm³ |
| Solubility | Completely miscible with water |
| Primary Applications | Non-oxidizing microbiocide for industrial water treatment |
| Storage Stability | Minimum 12 months at 5–30°C in original unopened container |
Q1: What is the primary mode of action of Dow ROCIMA 361 Biocide?
A: Dow ROCIMA 361 Biocide functions primarily as a broad-spectrum preservative through disruption of microbial cell membranes and interference with essential metabolic processes, effectively controlling bacteria, yeasts, and molds in water-based industrial formulations.
Q2: In which types of industrial formulations is Dow ROCIMA 361 Biocide commonly used?
A: It is widely applied in water-based coatings, adhesives, construction chemicals, metalworking fluids, and pigment dispersions—particularly where long-term preservation is required without compromising product stability or performance.
Q3: Is Dow ROCIMA 361 Biocide compatible with common formulation ingredients such as surfactants and thickeners?
A: Yes, it demonstrates good compatibility with a wide range of anionic, nonionic, and amphoteric surfactants, as well as common rheology modifiers—including associative and non-associative thickeners—under typical formulation pH and temperature conditions.
Q4: How should Dow ROCIMA 361 Biocide be added during formulation to ensure optimal efficacy?
A: It is recommended to add Dow ROCIMA 361 Biocide during the final stage of manufacturing, after pH adjustment and cooling, to minimize thermal degradation and ensure uniform distribution. Pre-dilution with water or a compatible solvent may aid dispersion in viscous systems.
Q5: What are key storage and handling considerations for Dow ROCIMA 361 Biocide?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, protected from direct sunlight and frost. Avoid prolonged exposure to elevated temperatures or strong oxidizing agents. Use appropriate personal protective equipment (PPE) when handling concentrated material.
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