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Solvay Tolcide PS70a is a 3rd-generation THPS high-efficiency industrial biocide from Solvay Novecare’s Tolcide PSA series. Designed for oilfield and industrial water treatment, it combines THPS with bio-penetrant, is a ready-to-use formula, effectively controls biofilm and various harmful microorganisms, suitable for complex industrial conditions
3rd-Gen THPS formula – Upgraded biocidal performance, stronger antibacterial effect
Powerful biofilm control – Strong penetration, removes stubborn biofilm and iron sulfide
Combined with bio-penetrant – Improves antibacterial penetration, adapts to complex conditions
Ready-to-use liquid formula – No pretreatment, direct dosing after opening, easy to operate
Broad-spectrum microbial inhibition – Effectively controls bacteria, MIC, schmoo and other pollutants
Oilfield water flooding system – Microbial control and anticorrosion in water injection
Oil and gas pipeline protection – Biofilm removal and antibacterial in pipelines
Drilling/completion fluid treatment – Fluid sterilization, ensuring construction safety
Oilfield fracturing operations – Microbial protection of fracturing fluid system
Industrial circulating water treatment – System microbial treatment, stable operation
| Brand | Solvay |
| Division | Novecare |
| Product Series | Tolcide® PSA Series |
| Product Type | Industrial biocide, biofilm controller, phosphonium salt biocide |
| Core Ingredients | Tetrakis(hydroxymethyl)phosphonium sulfate (THPS) + bio-penetrant |
| Form | Colorless to pale yellow transparent liquid |
| Usage | Ready-to-use, direct dosing |
Q1: What is the primary mode of action of Solvay Tolcide PS70a?
A: Solvay Tolcide PS70a functions as a broad-spectrum fungistatic agent, primarily inhibiting fungal growth through disruption of cell membrane integrity and metabolic activity. Its active ingredient is designed for sustained efficacy in polymer matrices without rapid leaching or volatility.
Q2: In which types of polymer systems is Tolcide PS70a most commonly incorporated?
A: Tolcide PS70a is especially suited for use in thermoplastic polymers such as polyolefins (PP, PE), PVC, and engineering plastics including ABS and polycarbonate. It demonstrates good thermal stability during melt processing and compatibility with common plasticizers and stabilizers.
Q3: How does Tolcide PS70a perform under humid or outdoor exposure conditions?
A: Tolcide PS70a is formulated to provide durable antifungal protection in high-humidity environments and offers resistance to wash-out and UV-induced degradation when properly compounded—making it suitable for applications such as building materials, agricultural films, and outdoor consumer goods.
Q4: Is Tolcide PS70a compatible with other biocidal additives or flame retardants?
A: Tolcide PS70a generally exhibits good co-formulation potential with common antimicrobial synergists and halogen-free flame retardants. However, compatibility testing is recommended for specific formulations—particularly when used alongside strong oxidizing agents or highly acidic/basic additives.
Q5: What is the typical dosage range for effective antifungal performance?
A: Effective dosage typically ranges from 0.1% to 2% by weight, depending on the polymer type, processing conditions, end-use environment, and required level of protection. Optimization should be conducted via laboratory-scale trials followed by real-world performance validation.
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