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Broad-spectrum fungicidal activity against key wood-decay and stain fungi, including Aureobasidium pullulans, Sclerophoma pityophila, and Coniophora puteana.
Non-volatile, water-based formulation with low volatility and minimal odor—ideal for indoor and enclosed-space applications.
Excellent leach resistance due to strong substrate binding, ensuring long-term protective performance in humid or intermittently wet conditions.
Compatible with common wood preservatives and finishing systems, enabling seamless integration into multi-step treatment protocols.
EU Biocidal Products Regulation (BPR)-compliant and approved under Article 19 for use in wood protection (PT8).
Protective treatment of interior timber structures such as roof trusses, floor joists, and stud walls.
Preservation of semi-exposed wooden components in residential and commercial buildings—including cladding substructures and soffits.
Pre-treatment of engineered wood products (e.g., LVL, glulam) prior to lamination or finishing.
Protection of historical timber elements during conservation and restoration projects.
| Chemical Type | Organic fungicide based on isothiazolinone derivatives (active ingredient: 4,5-dichloro-2-octyl-4-isothiazolin-3-one) |
| Product Form | Aqueous solution |
| Appearance | Clear, pale yellow to amber liquid |
| pH (1% aqueous solution) | 7.0 – 8.5 |
| Density (20 °C) | Approx. 1.02 – 1.05 g/cm³ |
| Solubility in Water | Completely miscible |
| Primary Applications | Wood protection (indoor and semi-exposed), anti-stain and anti-decay treatment |
| Key Regulatory Status | Approved under EU BPR PT8 (Wood Preservation); listed in Annex I of Regulation (EU) No 528/2012 |
Q1: What is the primary mode of action of Protectol KLC 50?
A: Protectol KLC 50 functions as a broad-spectrum fungicide with protective and preventive activity, primarily inhibiting fungal cell membrane synthesis through disruption of ergosterol biosynthesis.
Q2: In which types of industrial formulations is Protectol KLC 50 commonly used?
A: It is widely incorporated into water-based industrial coatings, adhesives, sealants, construction materials, and polymer dispersions where long-term resistance to mold, mildew, and saprophytic fungi is required.
Q3: Is Protectol KLC 50 compatible with common co-biocides and formulation additives?
A: Yes — Protectol KLC 50 generally exhibits good compatibility with isothiazolinones, benzisothiazolinones, and other non-oxidizing biocides, as well as typical surfactants, thickeners, and pH stabilizers used in aqueous systems.
Q4: How should Protectol KLC 50 be dosed in finished formulations?
A: Dosage depends on the specific formulation matrix, expected microbial challenge, and regulatory requirements for the end-use application; it is typically used at low concentrations, generally ranging from 0.1% to 2% by weight of the final product.
Q5: Does Protectol KLC 50 require special handling or storage conditions?
A: It should be stored in its original sealed container at moderate temperatures, protected from frost and prolonged exposure to direct sunlight; standard industrial chemical handling precautions apply, including appropriate PPE during handling and dispensing.
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E-mail: wangxingqiang@ericwchem.com
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