Product Overview
Potassium Hydroxide (KOH, Caustic Potash) is a highly alkaline inorganic compound essential across chemical manufacturing, biodiesel production, food processing, and liquid fertilizer formulation. With purity levels of 90-95% (flake/pearl) and 45-50% (liquid), Dongkwang Poland supplies industrial-grade KOH meeting European pharmaceutical and food-grade standards. As a critical precursor for potassium carbonate, potassium phosphates, and liquid NPK fertilizers, KOH demand is growing alongside the biodiesel and battery electrolyte sectors. Our European supply network ensures consistent availability despite global supply chain volatility.
How Potassium Hydroxide (Caustic Potash) Works
KOH is a strong base that fully dissociates in water into K⁺ and OH⁻ ions. The hydroxide ion drives saponification reactions in soap and biodiesel production, pH adjustment in water treatment, and neutralisation in chemical synthesis. In agriculture, KOH serves as a pH buffer and potassium source in liquid fertilizer concentrates, and as the starting material for potassium soaps used as organic-compatible insecticides and surfactants.
Key Benefits
Application Guide
Biodiesel: 1-1.5% by weight of vegetable oil for transesterification catalysis. Liquid fertilizers: dissolved to provide K₂O content in NPK liquid blends. Water treatment: dosed to raise pH to target levels. Soap manufacture: stoichiometric with fatty acids. Food processing: used for pH adjustment, cocoa alkalisation, and olive curing. Always add KOH to water (never reverse) and use appropriate PPE.
Ideal For
Storage & Handling
Store in HDPE or stainless steel containers. KOH is highly corrosive (GHS Category 1A) — causes severe skin burns and serious eye damage. Maintain in sealed containers away from acids, aluminium, zinc, and tin. Use full PPE: chemical-resistant gloves, face shield, chemical suit. Ensure eye wash stations and safety showers are accessible. ADR Class 8 for transport.
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