Solutions Guide
Benzalkonium Chloride for Wood Preservation
Benzalkonium Chloride is used as a fungicidal active in wood preservation — controlling surface mildew, protecting logs and outdoor timber against fungal decay, and serving as the biocidal carrier in some pressure-treatment systems. Vasudev Chemo Pharma supplies BKC 50% and 80% to wood-preservative formulators.
Last updated:
Use levels
Wood preservation typically uses 0.5%–2% active quat applied as a surface spray, dip or pressure-treatment carrier solution. BKC controls decay fungi and surface mould/mildew and is often combined with other actives (e.g. copper systems) for durability classes requiring ground-contact protection.
Formulation
Preservative formulators blend from BKC 80% concentrate (typically 10%–25% in carrier solutions). Penetration and retention depend on wood species, moisture and treatment method; confirm efficacy against the target service class. As with all quats, avoid anionic co-formulants.
Frequently asked questions
What BKC concentration is used for wood preservation?+
Typically 0.5%–2% active quat, as a surface spray, dip or pressure-treatment carrier.
Can BKC be combined with copper wood preservatives?+
Yes — it is often used with other actives to meet durability classes; validate the combined system against the target service class.
Which grade do preservative formulators buy?+
BKC 80% concentrate, typically diluted to 10%–25% in the carrier solution.