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

Property Details
Product Name Troysan® S61 Powder
Manufacturer Arxada (formerly Troy Corporation)
Chemical Type Dry-film preservative (powder form)
Active Ingredients Proprietary blend of fungicides and algaecides
Physical Form Powder
Appearance White to off-white powder
Odor Low to none
pH (1% solution) ~6.5 – 8.0
Solubility Dispersible in most formulation systems
Density @ 25 °C ~0.55 – 0.65 g/cm³ (bulk density)
Flash Point Not applicable (non-flammable powder)
Recommended Use Level 0.2% – 1.0% depending on formulation and exposure
Film Protection Duration 3–7 years depending on use conditions
Shelf Life 24 months (in sealed packaging, dry conditions)
Packaging Options 10 kg fiber drums, 25 kg paper bags

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