Troysan® S61 Powder

Troysan® S61 Powder by Troy Corporation (Arxada) is a highly cost-effective, isothiazolinone-, & diuron-free, broad-spectrum, dry-film preservative. It is suitable for exterior applications. It is effective against a wide variety of fungal and algal organisms. Troysan® S61 Powder is particularly suitable for use in highly alkaline systems or if the protected system is to be applied on alkaline surfaces as fresh concrete.

Overview

Troysan® S61 Powder is a dry-film preservative in powder form developed by Arxada (formerly Troy Corporation) to deliver long-lasting microbial protection in architectural and industrial coatings. Engineered with a blend of potent fungicidal and algaecidal actives, it is designed to prevent surface mold, mildew, and algae growth in both interior and exterior applications. Troysan® S61 Powder is compatible with a wide range of water-based and solvent-based formulations and maintains stability even under harsh environmental exposure. It is especially suited for dry-blend systems such as cementitious coatings, EIFS, renders, and powder coatings where liquid preservatives are unsuitable.

Benefits

  • Powder Form for Dry-Blending – Perfect for systems where water or liquid additives are incompatible

  • Broad-Spectrum Microbial Defense – Protects against mold, mildew, and algae on coating films

  • High Temperature Stability – Retains efficacy through heat-curing and thermal processes

  • Long-Term Outdoor Durability – Withstands humidity, sunlight, and pollutant exposure

  • No Effect on Coating Color or Finish – Maintains visual integrity of decorative products

  • Extended Protection Lifecycle – Reduces need for recoating or microbial maintenance

Applications

  • Cementitious Coatings & Grouts – Provides durable protection against algae and fungi in dry-mix systems

  • EIFS & Decorative Plasters – Guards facades and exterior finishes against discoloration and microbial degradation

  • Exterior Paints & Coatings – Used in high-performance emulsion and acrylic paints for outdoor use

  • Powder Coatings – Integrated into resin-based powders to prevent fungal growth post-application

  • Roof Coatings & Elastomerics – Ensures longevity in coatings exposed to moisture and UV radiation

  • Industrial & Maintenance Coatings – Ideal for harsh environments where long-term protection is critical

Properties Table

PropertyDetails
Product NameTroysan® S61 Powder
ManufacturerArxada (formerly Troy Corporation)
Chemical TypeDry-film preservative (powder form)
Active IngredientsProprietary blend of fungicides and algaecides
Physical FormPowder
AppearanceWhite to off-white powder
OdorLow to none
pH (1% solution)~6.5 – 8.0
SolubilityDispersible in most formulation systems
Density @ 25 °C~0.55 – 0.65 g/cm³ (bulk density)
Flash PointNot applicable (non-flammable powder)
Recommended Use Level0.2% – 1.0% depending on formulation and exposure
Film Protection Duration3–7 years depending on use conditions
Shelf Life24 months (in sealed packaging, dry conditions)
Packaging Options10 kg fiber drums, 25 kg paper bags

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