Potassium Phosphate Dibasic K2HPO4
| HS Code | 887423 |
| Chemical Formula | K2HPO4 |
| Molar Mass | 174.18 g/mol |
| Appearance | White, granular or crystalline powder |
| Odor | Odorless |
| Solubility In Water | Freely soluble |
| Ph Of Aqueous Solution | Around 8.9 (1% solution) |
| Density | 2.44 g/cm³ |
| Melting Point | 340 °C (decomposes) |
| Hygroscopicity | Hygroscopic |
| Cas Number | 7758-11-4 |
As an accredited Potassium Phosphate Dibasic K2HPO4 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | For sealing Potassium Phosphate Dibasic K₂HPO₄, use glass bottles with waxed stoppers for small quantities; use wooden barrels for large quantities, line the barrels with oil paper, and make the lid fit tightly with the barrel mouth to prevent moisture from entering and causing deliquescence. |
| Storage | Store Potassium Phosphate Dibasic K₂HPO₄ in a dry and clean place, away from acids and alkalis. When taking it out, open and cover it quickly, and seal it after taking it out to prevent Potassium Phosphate Dibasic K₂HPO₄ from absorbing moisture and agglomerating. |
| Shipping | When transporting Potassium Phosphate Dibasic K₂HPO₄, load and unload it gently to prevent the container from breaking. If it is packed in a glass bottle, it needs to be wrapped with straw to prevent collision and breakage, which may cause the loss of Potassium Phosphate Dibasic K₂HPO₄. |
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Historical Development
The ancients made soap and alchemy, and occasionally obtained stones containing potassium and phosphorus, but they did not know the details. In modern times, after the research of chemists, the preparation method of Potassium Phosphate Dibasic K₂HPO₄ was obtained. At first, only a small amount could be obtained. After the process was improved, it could be mass-produced and used in many aspects.
Product Overview
Potassium Phosphate Dibasic K2HPO4 is in the form of white crystals or powder, slightly bitter, and easily soluble in water. It is stable and not easy to deteriorate at room temperature. It is a commonly used substance in the chemical industry. It is used as a regulator in food, as an auxiliary material in medicine, and as an auxiliary agent in industry. It has a wide range of uses and is a material needed by many industries.
Physical & Chemical Properties
Potassium Phosphate Dibasic K2HPO4 has a melting point of about 340℃, low hygroscopicity, and regular crystals like sculptures. Its aqueous solution is weakly alkaline, can react with acids to form salts, and combine with certain metal ions to form precipitation. Its chemical properties are relatively active and its performance changes with environmental changes.
Technical Specifications & Labeling
The standard of Potassium Phosphate Dibasic K₂HPO₄ includes purity (not less than 98%), water-insoluble matter (not more than 0.1%), etc. The full name Potassium Phosphate Dibasic K₂HPO₄, various indicators, uses, and production date must be written on the label.
Preparation Method
The preparation of Potassium Phosphate Dibasic K2HPO4 usually uses phosphoric acid and potassium hydroxide as materials. Mix the two in proportion and react at a suitable temperature, just like seasoning with a spoon, with precise proportions. After the reaction, concentrate, crystallize, dry, remove impurities, and obtain pure crystals. Each step requires carefulness to produce a good product.
Chemical Reactions & Modifications
Potassium Phosphate Dibasic K2HPO4 is soluble in water, can dissociate into ions, and react with acid to neutralize into salts, such as acid and alkali, and return to peace. When it meets metal ions such as calcium and magnesium, it forms insoluble phosphates, which aggregate into lumps like mud and sand. If other substances are added or the reaction conditions are changed, its properties can be changed and its performance in certain aspects can be enhanced to meet different needs.
Synonyms & Product Names
Potassium Phosphate Dibasic K2HPO4, also known as potassium dihydrogen phosphate, has different names in different occasions, but they all refer to the same thing. If one person has multiple names, they are actually the same.
Safety & Operational Standards
When using Potassium Phosphate Dibasic K2HPO4, operators need to wear gloves and goggles to prevent it from contacting the skin and eyes. If it accidentally touches your body, rinse it with clean water quickly, and seek medical attention if it is serious. Storage and transportation should be in accordance with the rules, and it should not be mixed with prohibited items. Prepare emergency tools to ensure worry-free operation.
Application Area
Potassium Phosphate Dibasic K2HPO4 is widely used: it can adjust the acidity and alkali in food and stabilize the texture; it can be used as a buffer in medicine to help the stability of the medicine; it can be used in water treatment, electroplating, printing and dyeing in industry to help it work, just like a good material that can be used in many ways and show its strengths.
Research & Development
Today, researchers of Potassium Phosphate Dibasic K2HPO4 strive to improve the process, reduce costs and improve purity, and explore its capabilities in new fields, such as biomedicine and environmental protection, hoping to expand its use, increase its value, and make the best use of this material.
Toxicity Research
According to Toxicity Research, Potassium Phosphate Dibasic K2HPO4 has low toxicity and is harmless to normal contact. However, if taken in large quantities or exposed to high concentrations for a long time, it may damage the stomach or skin, so it must be used with caution and follow the rules.
Future Prospects
The future prospects of Potassium Phosphate Dibasic K2HPO4 will be considerable as the industry develops. If the process is more refined and new uses are developed, the demand will increase and its price will also rise. It is like a good horse meeting a good horse trainer, with a promising future, occupying a place in the market and helping the industry develop.
Where to Buy Potassium Phosphate Dibasic K2HPO4 in China?
As a trusted Potassium Phosphate Dibasic K2HPO4 manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Potassium Phosphate Dibasic K2HPO4 supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
What are the requirements for the raw material ratio when preparing Potassium Phosphate Dibasic K2HPO4?
This product is made of phosphoric acid and potassium hydroxide, and the ratio of the two must be accurate. For every 100 kilograms of phosphoric acid, add about 60 kilograms of potassium hydroxide. More will result in too much alkalinity, and less will result in too much acid. Put the phosphoric acid in a ceramic trough and warm it to 40 degrees. Use a copper spoon to slowly add potassium hydroxide, stirring with a bamboo paddle while adding, and stop when the pH value of the solution is about 8.2. Continue stirring for an hour to make the reaction thorough, like kneading dough, and then evaporate and crystallize. Only with this ratio can you get Potassium Phosphate Dibasic K2HPO4 with excellent purity. Its powder is white and dissolves in water without any precipitation.
What are the wonderful uses of Potassium Phosphate Dibasic K2HPO4 in the laboratory?
This product is a good material for buffers. When preparing biochemical experimental solutions, it can stabilize the pH value and prevent enzyme activity from being disturbed. It is used in cell culture to adjust the osmotic pressure of the culture medium, making it isotonic with physiological saline, and protecting cell survival. In chromatographic analysis, it can be used as a mobile phase additive to improve peak shape and increase separation by 30%. Its aqueous solution can clean glassware and remove residual organic matter, which is cleaner than ordinary detergents. In titration experiments, it is used as a reference substance to calibrate acid and alkali concentrations, and the error does not exceed one thousandth. It is used as a ruler, with precision and degree, to ensure the accuracy of experimental data.
What are the differences between different forms of Potassium Phosphate Dibasic K2HPO4?
anhydrous is white granules, weak in hygroscopicity, and convenient for storage; those containing crystal water are flaky crystals, easily soluble in water, but storage requires more moisture-proof. Industrial-grade particles are coarser and suitable for water treatment; food-grade powder is fine and can be directly added to beverages. Medical-grade is aseptically treated, pyrogen-free, and used for injection; agricultural-grade contains a little impurity, which is sufficient as fertilizer. Although the shapes are different, they are essentially the same. The selection depends on the scene, such as food grade for cooking and agricultural grade for fertilization, each is suitable for its own use.
How to prevent damage to Potassium Phosphate Dibasic K2HPO4 during transportation?
It is packaged in thick plastic bags, each bag weighs 30 kilograms, the bag mouth is heat-sealed and sealed, wrapped in a woven bag, and then packed into a wooden box, and the box is filled with straw for shock prevention. Avoid exposure to the sun during transportation, and the temperature of the carriage should not exceed 35 degrees to prevent the bag from softening and leaking. In rainy days, it is necessary to cover with oilcloth and avoid rain. If the bag is damp, it needs to be dried in time and cannot be piled for a long time. Handle it with care during loading and unloading, and do not throw it to prevent the bag from breaking and leaking. Such protection, like protecting a porcelain bottle, allows Potassium Phosphate Dibasic K2HPO4 to arrive at the destination intact.
What should I pay attention to when Potassium Phosphate Dibasic K2HPO4 comes into contact with metal?
The aqueous solution of this product has a corrosion-inhibiting effect on iron and zinc, so it can be stored in iron barrels, but the inner wall needs to be painted to prevent long-term corrosion. It is easy to react with aluminum to form aluminum phosphate precipitation, so aluminum containers cannot be used. It is safe with copper, and the solution can be stirred with a copper spoon. Contact with lead will dissolve lead ions and contaminate the product, so it needs to be avoided. If aluminum containers are accidentally used, the solution will gradually become turbid. At this time, it needs to be discarded and re-prepared, and cannot be used again to prevent affecting experiments or production.
