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Broad-spectrum fungicidal activity against common spoilage fungi, yeasts, and bacteria in water-based industrial systems.
Stable across a wide pH range (pH 4–10), ensuring consistent performance in diverse formulation environments.
Low volatility and minimal odor, supporting safe handling and compliance with occupational health requirements.
Compatible with anionic, nonionic, and amphoteric surfactants, enabling seamless integration into complex formulations.
Effective at low use concentrations (typically 0.05–0.2% w/w), delivering cost-efficient microbial control.
Preservation of water-based paints and coatings during storage and in-can.
Microbial control in architectural and industrial latex emulsions.
Protection of adhesives, caulks, and sealants from fungal degradation.
Stabilization of pigment dispersions and aqueous polymer systems.
Preservation of cleaning concentrates and maintenance chemicals.
| Chemical Type | Isothiazolinone-based biocide (mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one) |
| Product Form | Aqueous solution |
| Appearance | Clear, pale yellow liquid |
| pH (1% aqueous solution) | 2.5–4.0 |
| Density (20°C) | 1.12–1.16 g/cm³ |
| Solubility | Completely miscible with water |
| Primary Applications | In-can preservative for water-based industrial products |
| Key Features | Broad-spectrum efficacy, formulation stability, low-dose efficiency |
Q1: What types of industrial systems is MERGAL 530A specifically designed for?
A: MERGAL 530A is a broad-spectrum fungicide formulated for use in water-based industrial systems where fungal growth poses stability, odor, or performance risks — including water-miscible metalworking fluids, latex emulsions, pigment dispersions, and architectural coatings.
Q2: How does MERGAL 530A differ from other biocides in terms of mode of action and spectrum?
A: MERGAL 530A combines multiple active ingredients to deliver synergistic antifungal activity, with particular efficacy against yeasts and molds that commonly contaminate high-water-content formulations. Its formulation enhances compatibility with anionic and nonionic surfactants, supporting stable performance without compromising system pH or emulsion integrity.
Q3: Is MERGAL 530A compatible with common preservative boosters or co-biocides?
A: Yes — MERGAL 530A is frequently used in combination with bactericidal agents such as isothiazolinones or formaldehyde donors to provide comprehensive microbial control. Compatibility testing under actual formulation conditions is recommended to ensure optimal synergy and physical stability.
Q4: What is the typical dosage range for effective fungal control?
A: Dosage depends on formulation requirements, challenge level, and regulatory considerations, but MERGAL 530A is typically used at low concentrations — generally ranging from 0.1% to 2% by weight in the final product — with optimal levels determined through challenge testing and shelf-life studies.
Q5: Does MERGAL 530A require special handling or storage conditions?
A: MERGAL 530A should be stored in its original sealed container in a cool, dry place away from direct sunlight and strong oxidizing agents. It is recommended to avoid prolonged exposure to temperatures above 40°C and to maintain containers tightly closed when not in use to preserve efficacy and shelf life.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
