Building Chemicals

Phosphoric Acid 75% Poly

Due to a change in Hazardous Chemical legislation in 2023, we are unable to sell this product online due to additional customer information is required.  We can still supply the product, please call or email for a quote. Phosphoric acid 75% is colourless, odourless, non-volatile, viscous but still pourable. Because it is a concentrated acid, a 75% solution can be corrosive, although increasingly non-toxic as it is diluted. In addition to being a chemical reagent, phosphoric acid has a wide variety of uses; It is often used as a rust inhibitor, food additive, electrolyte, dispersing agent, industrial etching agent, fertiliser feedstock, and as a component of home cleaning products. Food-grade phosphoric acid (E number E338) is used to acidify foods and beverages such as cola drinks; it provides a tangy or sour taste, and being a mass-produced chemical is available cheaply and in large quantities. Phosphoric acid may be used as a ‘rust converter’, by direct application to rusted iron, steel tools, or surfaces. The phosphoric acid converts iron oxide, Fe2O3 (rust), to black ferric phosphate, FePO4. Phosphoric acid is also used as a cleaning solution in the construction industry to remove mineral deposits, cement smears, and hard water stains. Phosphorus is a nutrient used by plants, especially during flowering, making phosphoric acid particularly useful. As a pH adjuster in cosmetics and skin-care products. As a dispersing agent in detergents and leather treatment; as an additive to stabilise acidic aqueous solutions within a specified pH range.   Please click here to view our delivery information and costs.