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Broad-spectrum efficacy against bacteria, fungi, and algae in aqueous systems.
Stable under a wide pH range (pH 4–10) and compatible with common industrial additives.
Low volatility and minimal odor, supporting safer handling and reduced workplace exposure.
Non-oxidizing chemistry, preventing corrosion of metal components in cooling and process water systems.
Designed for continuous or slug dosing in recirculating water applications with long-lasting residual protection.
Industrial cooling water systems including open recirculating towers and closed loops.
Process water circuits in paper & pulp manufacturing and textile dyeing operations.
Oilfield injection water and produced water treatment to control microbial-induced corrosion (MIC).
Water-based metalworking fluids and hydraulic fluids requiring microbiological stabilization.
Pre-treatment and side-stream biocide dosing in HVAC and district cooling networks.
| Chemical Type | Heterocyclic nitrogen compound (isothiazolinone derivative) |
| Product Form | Aqueous solution |
| Appearance | Clear, pale yellow liquid |
| pH (1% aqueous solution) | 3.5–5.0 |
| Density (20 °C) | 1.08–1.12 g/cm³ |
| Solubility | Miscible with water in all proportions |
| Primary Applications | Cooling water, process water, metalworking fluids, oilfield water |
| Key Features | Non-oxidizing, broad-spectrum, low-foaming, thermally stable |
Q1: What is Solvay Tolcide PS70AF Biocide primarily used for?
A: Tolcide PS70AF is a broad-spectrum, water-based biocide formulated for use in industrial water systems, including cooling towers, process water circuits, and recirculating systems where microbial growth—such as bacteria, fungi, and algae—must be controlled to prevent biofouling, corrosion, and performance loss.
Q2: Is Tolcide PS70AF compatible with common water treatment chemistries?
A: Yes, Tolcide PS70AF is generally compatible with oxidizing and non-oxidizing biocides, scale and corrosion inhibitors, and dispersants commonly used in industrial water treatment programs. Compatibility should always be verified under actual system conditions, especially when blending with cationic polymers or highly acidic or alkaline additives.
Q3: How is Tolcide PS70AF typically dosed in industrial water systems?
A: Dosage is application-specific and depends on system volume, microbial challenge, water quality, and operating conditions. It is typically applied continuously or intermittently at low concentrations, generally ranging from 0.1% to 2% by weight of the treated water stream, with adjustments based on regular microbiological monitoring and performance evaluation.
Q4: Does Tolcide PS70AF require special handling or storage considerations?
A: Tolcide PS70AF should be stored in its original sealed container in a cool, dry, well-ventilated area away from direct sunlight and strong oxidizers. It is stable under recommended storage conditions but may degrade if exposed to prolonged high temperatures or freezing. Personal protective equipment—including gloves and eye protection—is recommended during handling per standard industrial hygiene practices.
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