Potassium Phosphate Monobasic CAS 7778-77-0, Potassium Phosphate Monobasic, CAS 7778-77-0
Solubility: Readily soluble in water (the aqueous solution is acidic, pH 4.2-4.7), insoluble in ethanol.
7778-77-0
H2KO4P
136.085541
231-913-4
| CAS | 7778-77-0 |
| Molecular formula | H2KO4P |
| Molecular weight | 136.085541 |
| EIENCS | 231-913-4 |
| Form | powder |
| Melting point | 252.6°C |
| boling point | > 450°C |
| Density | 2.338 g/mL at 25°C |
| Solubility | It is readily soluble in water (the aqueous solution is acidic, with a pH of 4.2-4.7), but insoluble in ethanol. |
| PKA | / |
| Color | White transparent |
| Storage temp |
Chemical Name: Potassium monophosphate (also known as potassium dihydrogen phosphate, acidic potassium phosphate)
Molecular formula: KH₂PO₄
Molecular weight: 136.09 g/mol
CAS Number: 7778-77-0
EINECS No. : 231-913-4
Appearance: Colorless to white crystals or crystalline powder, odorless.
Solubility: Readily soluble in water (the aqueous solution is acidic, pH 4.2-4.7), insoluble in ethanol.
1. Agriculture
High-efficiency compound fertilizer: With a total nutrient content (P₂O₅ + K₂O) of 86%, it is suitable for crops such as rice, wheat, cotton, and tobacco, enhancing lodging resistance and yield.
Drip irrigation system: Widely used in water-soluble fertilizers, especially suitable for phosphorus and potassium deficient soils.
2. Food and feed industry
Food additives
Leavening agent (baked goods), fermentation aid (yeast culture), flavoring agent (synthetic sake).
Limit standards: Wheat flour ≤ 5.0g /kg, beverages ≤ 2.0g /kg.
Feed phosphorus supplement: It meets the phosphorus requirements of livestock and poultry and enhances bone development.
3. Medicine and Laboratory
Buffer: Prepare ph-stabilizing solutions for serum inorganic phosphorus detection and bacterial culture media (such as leptospirosis test).
Pharmaceutical synthesis: Raw materials for uric acid agents and nutritional supplements.
4. Industry and Materials
Fine chemicals: Manufacturing potassium metaphosphate and polymer additives.
Electronic components: used in the production of piezoelectric crystals and laser harmonic generators.
Health risk
Low toxicity (oral LD₅₀ >5000 mg/kg in rats), but the dust irritates the respiratory tract and can cause burns when in contact with the eyes.
Storage requirements
Store in a sealed container in a cool and dry place with a relative humidity of less than 75%.
Do not store together with strong acids or toxic substances. Protect from rain and direct sunlight during transportation.
Leakage treatment: Adsorb with sand and collect. Avoid rinsing with water (deliquescent).
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