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Highly effective broad-spectrum biocide against bacteria, fungi, and algae.
Stable in alkaline and neutral pH environments typical of industrial water systems.
Low volatility and minimal odor, supporting safe handling and reduced workplace exposure.
Compatible with common corrosion inhibitors and scale control agents in cooling water formulations.
Non-oxidizing chemistry, avoiding interference with oxidant-based treatment programs.
Cooling water systems in power generation and HVAC installations.
Process water circuits in paper manufacturing and pulp mills.
Recirculating water systems in chemical and petrochemical plants.
Make-up water treatment for closed-loop industrial cooling towers.
Preservation of process fluids in metalworking and machining operations.
| Chemical Type | Non-oxidizing isothiazolinone-based biocide blend |
| Product Form | Liquid concentrate |
| Appearance | Pale yellow to amber clear liquid |
| pH (1% aqueous solution) | 6.0 – 8.0 |
| Density (20°C) | 1.08 – 1.12 g/cm³ |
| Solubility in Water | Completely miscible |
| Storage Stability | ≥12 months at 5–30°C in original sealed container |
| Primary Applications | Industrial water treatment, biofouling control |
Q1: What is Solvay Tolcide PS 50A Biocide primarily used for?
A: Tolcide PS 50A is a broad-spectrum preservative formulated for use in water-based industrial formulations, especially where long-term microbial control is required—such as in water-based paints, coatings, adhesives, and construction chemicals.
Q2: Is Tolcide PS 50A compatible with common paint and coating ingredients?
A: Yes, it demonstrates good compatibility with a wide range of latex polymers, thickeners, surfactants, and pH adjusters typically found in architectural and industrial coatings. Compatibility testing under actual formulation conditions is recommended prior to full-scale implementation.
Q3: How should Tolcide PS 50A be incorporated into a formulation?
A: It is typically added during the final stage of manufacturing, after pH adjustment and cooling, to minimize thermal degradation and ensure optimal stability. Dosage depends on formulation requirements but generally ranges from 0.1% to 2% by weight of the finished product.
Q4: Does Tolcide PS 50A offer protection against both bacteria and fungi?
A: Yes, it provides effective control against a broad spectrum of Gram-positive and Gram-negative bacteria, yeasts, and molds, making it suitable for preventing spoilage and maintaining product integrity throughout shelf life.
Q5: Are there any special handling or storage recommendations?
A: Store in original, tightly sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and strong oxidizing agents. Avoid freezing. As with all biocidal products, appropriate personal protective equipment should be used during handling.
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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
