What is Phosphoric acid CAS 7664-38-2?
Phosphoric acid CAS 7664-38-2 (also called orthophosphoric acid) is a colorless, odorless inorganic acid that exists as a viscous liquid when concentrated or a crystalline solid at lower temperatures depending on concentration and conditions. It is highly soluble in water and displays moderate acidity. Phosphoric acid is one of the most important commercial inorganic acids and serves as an intermediate in the manufacture of phosphate salts, surface treatments, acidulating agents, and other chemical products.
Specification
| Item |
Value |
| Appearance |
Colorless liquid or transparent crystalline solid |
| Melting Point |
~40 °C |
| Boiling Point |
158 °C |
| Density |
1.685 g/mL at 25 °C |
| Storage conditions |
Store in cool, dry, well-closed container |
Feature
- Strong Inorganic Acid – Exhibits strong acid properties in aqueous solution, suitable for acidulation and pH control in industrial and laboratory contexts.
- High Water Solubility – Fully miscible with water across concentration ranges, enabling uniform acid solutions for diverse applications.
- Thermal Stability – Stable under typical storage and usage conditions, with physical state shifting from crystalline solid to viscous liquid with concentration changes.
- Versatile Intermediate – Serves as a precursor in the synthesis of phosphate salts, specialty chemicals, and functional acid derivatives.
- Wide Grade Availability – Commercially offered in various grades (technical, food, and industrial) to meet specific application requirements.
Application
- Fertilizer Production – Principal feedstock for manufacturing phosphate fertilizers such as monoammonium phosphate (MAP) and diammonium phosphate (DAP).
- Food & Beverage Industry – Used as an acidulant and flavoring agent in beverages and food products; serves as a buffering and preservative component when appropriately diluted.
- Metal Surface Treatment – Employed in pickling, etching, and cleaning formulations to remove oxides and prepare metal surfaces for finishing.
- Chemical Synthesis – Functions as a catalyst, dehydrating agent, or reagent in organic and inorganic synthesis processes.
- Detergent & Cleaning Products – Integrated into household and industrial cleaners, descalers, and rust removers for acid action.
- Buffering & Pharmaceutical Uses – Serves in pharmaceutical formulations and laboratory buffers; also used in dental cements and analytical reagents.
Packaging
Mikem offers flexible packaging options, including 25 kg of fiber drums for liquid products and 15–25 kg PP/PE bags for powder products, all customizable to meet your specific needs.