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Broad-spectrum efficacy against key fungal pathogens including Aspergillus, Penicillium, and Cladosporium.
Low-volatility, non-leaching formulation designed for long-term preservative performance in water-based systems.
Compatible with a wide range of industrial formulations, including paints, coatings, adhesives, and latex emulsions.
Stable across pH 4–10 and tolerant to moderate heat exposure during processing.
Meets global regulatory requirements for industrial biocides, including EPA registration and EU BPR compliance.
Water-based architectural and industrial paints and coatings.
Acrylic and vinyl acetate-based latex emulsions.
Adhesives and sealants used in construction and woodworking.
Textile and leather finishing formulations.
Non-ionic surfactant systems and cleaning concentrates.
| 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 liquid concentrate |
| Appearance | Clear, pale yellow to amber liquid |
| pH (1% aqueous solution) | 2.5 – 4.5 |
| Density (20°C) | 1.08 – 1.12 g/cm³ |
| Solubility | Miscible with water and common polar organic solvents |
| Primary Applications | Fungal control in water-based industrial products |
| Key Features | Non-oxidizing, low odor, rapid microbial kill kinetics |
Q1: What is the primary mode of action of Dow ROCIMA 631 Fungicide?
A: Dow ROCIMA 631 is a broad-spectrum fungicide based on isothiazolinone chemistry, acting primarily through inhibition of key enzymatic processes essential for fungal cell metabolism and energy production. It provides rapid and effective control against a wide range of spoilage microorganisms, including molds, yeasts, and bacteria.
Q2: In which types of industrial formulations is Dow ROCIMA 631 typically used?
A: It is commonly incorporated into water-based industrial products such as metalworking fluids, latex paints and coatings, adhesives, construction chemicals, and cleaning concentrates—where long-term microbial stability is critical to product shelf life and performance.
Q3: How does pH affect the stability and efficacy of Dow ROCIMA 631?
A: Dow ROCIMA 631 demonstrates optimal stability and antimicrobial activity in mildly acidic to neutral pH ranges (approximately pH 4.0–8.5). Performance may decline significantly under strongly alkaline conditions due to accelerated hydrolysis of the active component.
Q4: Is Dow ROCIMA 631 compatible with common biocides or preservatives used in co-formulation?
A: It is generally compatible with many non-oxidizing preservatives and can be used in combination strategies to broaden antimicrobial spectrum or mitigate resistance development. However, compatibility testing is recommended prior to full-scale co-formulation, especially with oxidizing agents, strong chelators, or highly reactive thiol-containing additives.
Q5: What safety and handling considerations apply during routine use?
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 skin and eye irritant; avoid direct contact and inhalation of mists or vapors. Always consult the Safety Data Sheet (SDS) for detailed toxicological information and workplace exposure guidance.
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