Phosphoric Acid (H₃PO₄) is a triprotic acid, meaning it can release three protons (H⁺ ions) per molecule, making it valuable for pH adjustment. At 85% concentration, it appears as a clear, colorless, and viscous liquid with negligible odor. Its moderate acid strength allows selective reactivity, unlike stronger acids such as sulfuric acid, reducing material degradation risks in controlled applications.
The acid is manufactured through either the wet process, where phosphate rock reacts with sulfuric acid, or by thermal processing involving elemental phosphorus oxidation. The wet process is predominant for fertilizer-grade acid, while thermal routes produce higher purity variants for food and specialty industries.
Phosphoric Acid serves as a buffering agent and acidity regulator due to its ability to donate protons in stages, which stabilizes pH in complex chemical systems. In fertilizers, it provides readily available phosphate essential for plant growth. In detergent formulations, it acts to improve formulation stability and enhance cleaning efficacy by chelating metal ions. It also inhibits scale formation and corrosive deposits in water treatment systems by sequestering calcium and magnesium ions.
Important physical properties include a density around 1.685 g/cm³ for 85% acid, and complete solubility in water, allowing it to be diluted or blended easily. It reacts mildly with metals compared to stronger mineral acids but requires careful handling due to its corrosivity. Buyers should verify exact purity levels and trace metal contents, which can affect specific industrial applications.
Zenco Systems Ltd’s supply covers food-grade and technical-grade phosphoric acid, tailored to the customer’s application needs, regulatory standards, and safety procedures in Kenya and neighboring East African countries.
