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Highly effective broad-spectrum biocide against bacteria, fungi, and algae.
Stable in acidic to neutral pH ranges (pH 3–7), ensuring compatibility with diverse formulations.
Low volatility and minimal odor, supporting safer handling and reduced workplace exposure.
Non-oxidizing chemistry, preventing corrosion in metal-containing systems and preserving material integrity.
Compatible with common surfactants, thickeners, and polymers used in industrial coatings and cleaning products.
Preservation of water-based paints and architectural coatings.
Microbial control in industrial metalworking fluids and coolants.
Protection of adhesives, sealants, and construction mastics during storage and service life.
Stabilization of pigment dispersions and latex emulsions in manufacturing processes.
Antimicrobial safeguarding of nonwoven fabric slurries and paper coating formulations.
| Chemical Type | Isothiazolinone-based biocide blend |
| Product Form | Aqueous solution |
| Appearance | Clear, pale yellow liquid |
| Active Ingredient Content | 7.5% w/w total isothiazolinones (as specified in product designation) |
| pH (1% aqueous solution) | 3.0–5.0 |
| Density (20°C) | 1.08–1.12 g/cm³ |
| Solubility | Completely miscible with water |
| Storage Stability | ≥24 months at 5–25°C in original sealed container |
Q1: What is Solvay Tolcide PS 75 Biocide primarily used for?
A: Solvay Tolcide PS 75 Biocide is a broad-spectrum preservative designed for use in water-based industrial formulations, including coatings, adhesives, construction chemicals, and metalworking fluids, where long-term microbial control is required.
Q2: Is Tolcide PS 75 compatible with common formulation ingredients such as surfactants and thickeners?
A: Yes, Tolcide PS 75 exhibits good compatibility with many anionic, nonionic, and amphoteric surfactants, as well as common rheology modifiers and coalescing agents—though compatibility testing under actual formulation conditions is always recommended.
Q3: How should Tolcide PS 75 be incorporated into a formulation?
A: It is typically added during the cool-down phase of manufacturing, after high-temperature processing is complete, to preserve biocidal activity. Direct addition to the aqueous phase with gentle mixing is preferred for optimal dispersion and stability.
Q4: Does Tolcide PS 75 offer protection against both bacteria and fungi?
A: Yes—it delivers effective control against a wide range of Gram-positive and Gram-negative bacteria, yeasts, and molds, making it suitable for formulations prone to spoilage from multiple microbial sources.
Q5: What is the typical dosage range for Tolcide PS 75 in finished products?
A: Dosage depends on formulation composition, pH, storage conditions, and microbial challenge level; it is generally used at low concentrations, typically ranging from 0.1% to 2.0% by weight of the final product.
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