Phosphoric Acid CAS#7664-38-2
Phosphoric Acid CAS#7664-38-2 High Solubility: Phosphoric acid demonstrates excellent solubility in water and is readily soluble in polar organic solvents such as ethanol, facilitating its employment in diverse industrial applications.
Stable pH: Dilute aqueous solution of this compound maintains a stable acidic pH value under heating and long-term storage conditions, showing reliable thermal stability in aqueous media without easy decomposition.
Versatile Uses: It serves as a food acidity regulator, raw material for phosphate salt production, metal surface treatment agent, and analytical reagent for chemical testing.
Liquid Form & Corrosive Nature: This material is provided as a colorless transparent viscous liquid with non-volatile characteristics, making it applicable in industrial settings that require acidification treatment and standardized safe handling.
Phosphoric acid, characterized by the molecular formula H₃PO₄, presents as a colorless, odorless viscous liquid. It exhibits infinite miscibility with water and ethanol at 25°C, while displaying limited solubility in non-polar solvents such as benzene. Its dilute aqueous solution maintains stable acidic properties and shows good stability upon conventional heating. The substance possesses corrosive and irritant characteristics and is utilized for metal passivation and rust removal, phosphate fertilizer manufacturing, food pH adjustment, and fine chemical raw material preparation.
Phosphoric Acid Chemical Properties
| Property Item | Specification Data |
|---|---|
| Melting point | 42.35 °C (lit.) |
| Density | 1.874 g/cm3 |
| Vapor density | 3.38 (vs air) |
| Refractive index | 1.434 |
| Storage temp | Store below +30°C, sealed |
| Solubility | Miscible with water, ethanol |
| Form | Liquid |
| Color | Colorless |
| Odor | Odorless |
| PH Range | 1.5 (100g/l, H2O, 20℃) |
| PH | 1.5 (100g/l, H2O, 20℃) |
| Water Solubility | Infinite miscibility (25 º C) |
| Sensitive | Hygroscopic |
| Merck | 14,7343 |
| BRN | 1921286 |
| Stability | Stable. Incompatible with strong bases, active metals. |
| InChIKey | NBIIXXVUOWXCGY-UHFFFAOYSA-N |
| CAS DataBase Reference | 7664-38-2 (CAS DataBase Reference) |
| NIST Chemistry Reference | Phosphoric acid (7664-38-2) |
| EPA Substance Registry System | Phosphoric acid (7664-38-2) |
Safety Information
| Safety Item | Details |
|---|---|
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 26-45 |
| WGK Germany | 1 |
| RTECS | TB6300000 |
| F | 10 |
| TSCA | Yes |
| HS Code | 28092000 |
This compound is employed as a raw material for phosphate fertilizer and phosphate salt manufacturing, a metal surface treatment agent for rust removal and passivation. It also functions as an acidity regulator and preservative in food industry, acts as a catalyst in organic synthesis, and is utilized as an electrolyte in battery production. Additionally, it finds application as a descaling agent for industrial equipment, laboratory analytical reagent, and auxiliary additive in ceramic and polishing industries.
