Phosphoric Acid is an inorganic compound with the chemical formula H₃PO₄ and CAS Number 7664-38-2. It is commonly supplied as a colourless, odourless liquid in aqueous solutions at different concentrations. Pure anhydrous phosphoric acid may also exist as a colourless crystalline solid. It is highly soluble in water and is classified as a triprotic acid because it can release three hydrogen ions in successive dissociation steps.

Phosphoric Acid is valued as a source of phosphate ions and as an acidic reagent in aqueous solutions and chemical reactions. Common laboratory applications include pH adjustment, buffer preparation, acid-base titrations, phosphate solution preparation, analytical chemistry procedures, and inorganic chemistry experiments. It is also used in research involving phosphate compounds, chemical equilibria, and acid-base reactions.

Its chemical properties and ability to form phosphate salts make Phosphoric Acid useful in analytical chemistry, biochemistry, inorganic chemistry, and general laboratory research. It may also be used in specialised chemical formulations, metal treatment processes, and other applications requiring a phosphate-based acid. The appropriate grade, concentration, and purity should be selected according to the requirements of the intended application.

KSFE Malaysia supplies laboratory chemicals and scientific products for research institutions, educational facilities, and general laboratory applications.

Safety Note: Phosphoric Acid is a corrosive chemical, particularly at higher concentrations, and may cause severe skin burns and serious eye damage. Avoid direct contact with the chemical and inhalation of mist or vapour. Handle it using appropriate personal protective equipment, including chemical-resistant gloves, protective clothing, and eye protection. When diluting, always add acid slowly to water and never add water directly to concentrated acid. Follow the supplier's safety data sheet (SDS) for proper handling, storage, and disposal.