Product Description of Monopotassium Phosphate CAS#7778-77-0
Monopotassium phosphate is a commonly used inorganic phosphate compound. It is colorless transparent crystal or white crystalline powder with no odor at room temperature and has excellent water solubility with weakly acidic aqueous solution. Featuring stable physicochemical properties, high purity and few impurities, it has excellent buffering, chelating and nutritional supplementing properties, serving as a universal basic raw material in agriculture, food and fine chemical industries.
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Chemical Properties of Monopotassium Phosphate CAS#7778-77-0
| Melting point | 252.6 °C (lit.) |
| Boiling point | > 450 °C |
| bulk density | 1200kg/m3 |
| density | 2.338 g/mL at 25 °C (lit.) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.4864 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1.5 M at 20 °C, clear, colorless |
| form | powder |
| color | White transparent |
| Specific Gravity | 2.338 |
| Odor | Odorless |
| PH | 4.2-4.6 (20g/l, H2O, 20℃) |
| pka | (1) 2.15, (2) 6.82, (3) 12.38 (at 25℃) |
| biological source | rabbit |
| Water Solubility | 222 g/L (20 ºC) |
| Specific Heat Capacity | Cp(crystal): 0.85 J/(g·K), at 25℃ |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.046 |
| λ: 280 nm Amax: 0.040 |
| Decomposition | 253 °C |
| Merck | 147,659 |
| Specific Activity | 25-33nmol/min·mg |
| Stability: | Hygroscopic |
| Cosmetics Ingredients Functions | BUFFERING |
| InChI | 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1 |
| InChIKey | GNSKLFRGEWLPPA-UHFFFAOYSA-M |
| SMILES | [K+].OP(O)([O-])=O |
| CAS DataBase Reference | 7778-77-0(CAS DataBase Reference) |
| EPA Substance Registry System | Monopotassium phosphate (7778-77-0) |
| Absorption | ≤0.01 at 260nm |
| ≤0.01 at 280nm |
| Hazard Codes | |
| WGK Germany | WGK 1 |
| RTECS | TC6615500 |
| TSCA | TSCA listed |
| HS Code | 2835240000 |
| Storage Class | 11 - Combustible Solids |
| Hazardous Substances Data | 7778-77-0(Hazardous Substances Data) |
| Toxicity | LD50 skin in rabbit: > 4640mg/kg |
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Product Application of Monopotassium Phosphate CAS#7778-77-0
It is mainly used as high-efficiency phosphorus-potassium compound fertilizer, food acidity regulator, industrial buffer and chemical intermediate. It is widely applied in agricultural fields such as crop planting, fruit and vegetable seedling raising and flower maintenance, and also used in food processing, water treatment deployment, fine phosphate synthesis and industrial auxiliary preparation industries.
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