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Broad-spectrum fungicidal activity against key spoilage microorganisms, including bacteria, yeasts, and molds.
Stable across a wide pH range (pH 4–10), ensuring compatibility with diverse water-based formulations.
Low volatility and non-volatile residue profile, supporting safe handling and regulatory compliance in industrial settings.
Excellent storage stability—maintains efficacy for ≥24 months when stored under recommended conditions (cool, dry, away from direct sunlight).
Eco-friendly profile with low aquatic toxicity and ready biodegradability per OECD 301 series testing.
Water-based architectural coatings and interior paints.
Industrial maintenance coatings and protective primers.
Adhesives, sealants, and caulking compounds.
Construction chemicals including cementitious mortars and grouts.
Textile and leather processing auxiliaries.
| Chemical Type | Isothiazolinone-based biocide (mixture of 1,2-benzisothiazolin-3-one and 2-methyl-4-isothiazolin-3-one) |
| Product Form | Aqueous solution |
| Appearance | Clear, pale yellow to amber liquid |
| pH (1% aqueous solution) | 3.0–5.0 |
| Density (at 20°C) | 1.08–1.12 g/cm³ |
| Solubility in Water | Completely miscible |
| Primary Applications | Preservation of water-based industrial formulations |
| Key Features | Non-oxidizing, non-metallic, low odor |
Q1: What is the primary mode of action of Dow ROCIMA 520S Fungicide?
A: Dow ROCIMA 520S functions as a broad-spectrum fungicide through inhibition of fungal cell membrane synthesis, effectively controlling a range of spoilage microorganisms commonly encountered in water-based industrial systems.
Q2: In which types of industrial formulations is ROCIMA 520S typically used?
A: It is widely applied in water-miscible metalworking fluids, latex paints and coatings, adhesives, sealants, and other aqueous industrial products where long-term microbial stability is required during storage and use.
Q3: Is ROCIMA 520S compatible with common biocides used in dual-preservative systems?
A: Yes, ROCIMA 520S is generally compatible with isothiazolinones and other complementary biocides, enabling synergistic preservation strategies—compatibility should be verified under actual formulation conditions prior to full-scale implementation.
Q4: How should ROCIMA 520S be incorporated into a formulation?
A: It is recommended to add ROCIMA 520S during the cool-down phase of manufacturing, after high-temperature processing is complete and pH has been adjusted, to ensure optimal stability and efficacy.
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