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Broad-spectrum efficacy against bacteria, fungi, and algae in water-based systems.
Low-foaming formulation suitable for high-shear industrial processes.
Stable across a wide pH range (pH 4–10) and compatible with common water treatment additives.
Non-oxidizing chemistry that avoids corrosion risks associated with chlorine or bromine-based biocides.
EPA-registered for use in industrial water systems under U.S. regulatory frameworks.
Cooling water systems in HVAC and power generation facilities.
Process water circuits in paper and pulp manufacturing.
Recirculating water systems in metalworking fluid applications.
Make-up water treatment in closed-loop industrial cooling towers.
Preservation of water-based emulsions and coatings during storage and transport.
| Chemical Type | Isothiazolinone-based biocide blend |
| Product Form | Liquid concentrate |
| Appearance | Clear, pale yellow to amber liquid |
| pH (as supplied) | 3.5–5.5 |
| Density (20 °C) | 1.08–1.12 g/cm³ |
| Solubility | Miscible with water in all proportions |
| Primary Applications | Industrial water treatment, metalworking fluids, paper mill systems |
| Key Features | Non-oxidizing, low-foaming, broad-spectrum microbial control |
Q1: What is the primary mode of action of Dow ROCIMA 640 Biocide?
A: Dow ROCIMA 640 Biocide functions primarily as a broad-spectrum antimicrobial agent effective against bacteria, yeasts, and molds. Its activity stems from its ability to disrupt microbial cell membranes and interfere with essential cellular processes, leading to rapid biocidal action in aqueous systems.
Q2: In which types of industrial formulations is Dow ROCIMA 640 Biocide commonly used?
A: It is widely applied in water-based industrial products such as metalworking fluids, latex paints and coatings, adhesives, sealants, construction chemicals, and cleaning concentrates—where long-term preservation against microbial spoilage is required during storage and use.
Q3: How stable is Dow ROCIMA 640 Biocide under typical formulation conditions?
A: Dow ROCIMA 640 Biocide demonstrates good stability across a broad pH range (approximately pH 4–10) and remains effective in the presence of common surfactants, thickeners, and moderate levels of electrolytes. Thermal stability supports incorporation during standard manufacturing processes without significant degradation.
Q4: Is Dow ROCIMA 640 Biocide compatible with other common preservatives?
A: Yes, it is frequently used in combination with complementary biocides—such as isothiazolinones or formaldehyde releasers—to broaden the antimicrobial spectrum and enhance overall preservation performance. Compatibility should be verified empirically for each specific formulation due to potential interactions.
Q5: What safety and handling considerations apply when using Dow ROCIMA 640 Biocide?
A: As with all industrial biocides, appropriate personal protective equipment (PPE) such as gloves and eye protection should be worn during handling. The product is classified as an irritant and may cause skin and eye irritation; users must consult the Safety Data Sheet (SDS) for detailed hazard information, first-aid measures, and safe handling instructions.
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