Potassium dihydrogen phosphate for analysis EMPARTA® ACS

Potassium dihydrogen orthophosphate monobasic is valued for its high solubility, stability, and buffering ability. Key properties include: 

• pH Range: Acts as an acidic buffer, stabilizing pH between 4.5–5.5—crucial for precise biochemical processes. 

• Solubility: Highly soluble in water, insoluble in alcohol—ideal for water-based systems. 

• Thermal Stability: Maintains structure across varying temperatures, suitable for heat-treated formulations. 

• Combustion: Non-combustible and safe under standard conditions. 

• Controlled Release: Compatible with gradual nutrient or chemical release systems. 

These features make it a dependable, safe choice across industries. 

Understanding the molecular composition of Potassium Phosphate Monobasic helps in appreciating its behaviour and utility in different applications. 

• Chemical Formula: KH₂PO₄ 

• Molar Mass: 136.09 g/mol 

• Composition: Comprises one potassium ion (K⁺), two hydrogen ions (H⁺), and a single phosphate ion (PO₄³⁻). 

The combination of potassium and phosphate ions is essential for plant nutrition and biological systems.  

Potassium Dihydrogen Orthophosphate (CAS No. 7778 77 0) is known for its stable and predictable physical form, which enhances ease of use across industrial and laboratory environments. 

Potassium Monophosphate (KH₂PO₄) is produced through a controlled reaction between phosphoric acid and potassium hydroxide or potassium carbonate. 

Step-by-Step Process: 

1. Neutralization: Phosphoric acid is neutralized with potassium hydroxide or carbonate under controlled conditions to form KH₂PO₄. 
2. Filtration: The mixture is filtered to remove impurities. 
3. Concentration: Water is evaporated to concentrate the solution. 
4. Crystallization: Cooling induces crystal formation. 
5. Drying & Packaging: Crystals are dried and packed under GMP-compliant conditions. 

Due to its versatile nature, Potassium Dihydrogen Orthophosphate (KH₂PO₄) is extensively used across a wide range of industries: 

Food Industry: 

• Used as a food additive (E340) for acidity regulation. 

•  Serves as a mineral supplement in energy drinks, powders, and processed foods. 

•  Helps maintain texture and stability in baked goods and dairy alternatives. 

Pharmaceuticals: 

• Used as an electrolyte in IV fluids and oral rehydration salts (ORS). 

•  Acts as a buffer in various pharmaceutical formulations. 

•  Key ingredient in mineral supplements for potassium and phosphorus intake. 

Agriculture & Hydroponics: 

• Used as a key source of phosphorus and potassium in NPK fertilizers. 

• Promotes root development, flowering, and fruiting in plants. 

• Ideal for hydroponic farming systems where water-soluble nutrients are essential. 

Chemical & Laboratory Use: 

• Acts as a pH buffer in analytical chemistry and lab experiments. 

• Used in preparing phosphate buffer solutions for cell cultures and biochemical assays. 

• Often paired with sodium dodecyl sulfate chemical for protein separation and electrophoresis. 

Water Treatment: 

• Acts as a corrosion inhibitor by forming protective layers on metal surfaces. 

• Prevents scale buildup in heating and cooling water systems. 

• Used with merck silver nitrate in water ion analysis. 

Potassium Dihydrogen Orthophosphate Monobasic (KH₂PO₄, CAS No 7778-77-0) is a versatile, non-toxic compound valued for its buffering capacity, nutritional content, and chemical stability. Used in food processing, research, pharmaceuticals, agriculture, and water treatment, it ensures formulation precision and consistency. At Lab Chemicals, our high-purity EMPARTA® ACS grade Potassium Monophosphate meets top industry standards, with customizable options available. For quality, reliability, and seamless application across sectors, trust Lab Chemicals as your partner in delivering premium Potassium Phosphate Monobasic. 

1. What is potassium phosphate monobasic?

Potassium phosphate monobasic, also called potassium monophosphate or potassium dihydrogen orthophosphate monobasic, is a water-soluble salt used in laboratories, pharmaceuticals, food, and agriculture. Its CAS number is 7778-77-0 (sometimes written as 7778 77 0), which uniquely identifies this compound.

2. What are the chemical properties of potassium phosphate monobasic?

• Molecular Formula: KH₂PO₄
• Molecular Weight: 136.09 g/mol
• Solubility: Highly soluble in water
• pH of 1% solution: 4.5–5.5

3. Is potassium monophosphate the same as potassium phosphate monobasic?

Yes, potassium monophosphate is another name for potassium phosphate monobasic (KH₂PO₄). Both refer to the same chemical compound.

4. What are the main applications of potassium phosphate monobasic?

• Preparation of buffer solutions in labs
• Pharmaceutical formulations
• Food additive and preservative
• Agricultural nutrient applications
• Analytical chemistry and chemical reactions

5. Can potassium phosphate monobasic be used to make buffer solutions?

Yes, it is commonly used in phosphate buffer systems to maintain pH stability in biological and chemical experiments.