Solvay Tolcide PS75 is a fast-acting industrial biocide from TOLCIDE series by Solvay Novecare. With THPS as active ingredient, it features rapid microbial kill, low eco-toxicity, full water miscibility, suitable for oilfield, cooling water, pulp and paper applications.
Fast-acting biocidal – Quickly eliminates harmful microbes in industrial systems
Low eco-toxicity – High environmental safety, meets industrial standards
Fully water-miscible – Easy to disperse and add, compatible with water-based systems
Ready-to-use – Can be applied directly or used as formulation base
Strong stability – Maintains high efficacy in industrial conditions
Oilfield water treatment – Water injection and fluid protection
Industrial cooling water – Microbial control and corrosion inhibition
Pulp & paper industry – Sterilization for pulp and white water systems
Industrial cleaning fluids – Antibacterial for water-based cleaners
Industrial water-based formulations – Coating & additive preservation
| Brand | Solvay |
| Division | Novecare |
| Product Series | TOLCIDE® Series |
| Product Type | Fast-acting industrial biocide |
| Active ingredient | Tetrakis(hydroxymethyl)phosphonium sulfate (THPS) |
| Solubility | Fully miscible with water |
| Usage | Ready-to-use or formulation base |
Q1: What is the primary mode of action of Solvay Tolcide PS75 Fungicide?
A: Solvay Tolcide PS75 functions as a broad-spectrum fungistatic agent, primarily inhibiting fungal growth through disruption of cellular membrane integrity and metabolic activity. Its performance is optimized in non-leaching, polymer-bound applications where sustained surface protection is required.
Q2: In which types of polymer systems is Solvay Tolcide PS75 typically incorporated?
A: It is commonly used in thermoplastic polymers such as polyolefins (PP, PE), PVC, and certain engineering thermoplastics where thermal stability during processing is essential. Compatibility and dispersion are generally favorable in non-polar to moderately polar matrices.
Q3: How does Solvay Tolcide PS75 differ from conventional leaching biocides?
A: Unlike water-soluble or migratory biocides, Solvay Tolcide PS75 is designed for non-leaching, immobilized functionality—retaining antifungal efficacy on the polymer surface without significant release into the environment. This supports longer-lasting protection and aligns with evolving regulatory expectations for reduced environmental impact.
Q4: What are key handling and processing considerations during compounding?
A: Solvay Tolcide PS75 exhibits good thermal stability up to typical polymer processing temperatures. It should be introduced during masterbatch preparation or direct compounding using standard high-shear mixing equipment. Uniform dispersion is critical for consistent performance, and pre-drying is not generally required unless ambient humidity is exceptionally high.
Q5: Is Solvay Tolcide PS75 suitable for applications requiring regulatory compliance for food contact or medical devices?
A: Solvay Tolcide PS75 is intended for industrial and consumer product applications where surface antifungal protection is needed. It is not pre-approved for direct food-contact or implantable medical device use; end-use compliance must be evaluated case-by-case in coordination with relevant regulatory frameworks and application-specific testing.
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