Potassium Dihydrogen Phosphate 500G – EMSURE® ISO
Product Overview
Potassium Dihydrogen Phosphate 500G is a laboratory chemical used in analytical chemistry, laboratory research, and buffer preparation. It is also known as Potassium Phosphate Monobasic, Monopotassium Phosphate, or Potassium Biphosphate. This inorganic phosphate salt is valued for its role in preparing phosphate buffer solutions and supporting various analytical procedures.
Sigma-Aldrich, under the Millipore product range, lists Potassium Dihydrogen Phosphate for Analysis EMSURE® ISO under product number 104873. It is intended for analytical reagent applications where the chemical’s stated quality specifications meet the requirements of the laboratory method. The 500G pack size is suitable for laboratories that require a practical quantity of reagent for repeated testing and research work.
Potassium Dihydrogen Phosphate is commonly used alongside other phosphate salts, such as disodium hydrogen phosphate, to prepare buffer solutions with a selected pH. Its suitability for a specific procedure depends on the required concentration, pH, and analytical method.
Product Specifications
- Product Name: Potassium Dihydrogen Phosphate
- Alternative Name: Potassium Phosphate Monobasic
- Brand: Millipore / Sigma-Aldrich
- Product Number: 104873
- Grade: EMSURE® ISO, for analysis
- Pack Size: 500G
- CAS Number: 7778-77-0
- Molecular Formula: KH₂PO₄
- Molecular Weight: 136.09 g/mol
- Chemical Type: Inorganic phosphate salt
- Main Application: Analytical laboratory reagent and buffer preparation
Chemical Properties and Characteristics
Potassium Dihydrogen Phosphate is an inorganic salt that generally appears as a white or colourless crystalline solid. It dissolves in water and forms an acidic phosphate solution. These properties make it useful in preparing phosphate buffers and in laboratory procedures where controlled phosphate concentrations are required.
The chemical formula KH₂PO₄ represents one potassium ion and the dihydrogen phosphate ion. Its molecular weight is approximately 136.09 g/mol. The compound is often selected for laboratory buffer preparation because it can be combined with other phosphate salts to establish a suitable pH range.
The EMSURE® ISO designation identifies a specific analytical reagent product. For exact assay limits, impurity specifications, and acceptance criteria, consult the manufacturer’s current product documentation and certificate of analysis (COA). Do not assume a particular purity percentage unless it is confirmed by the applicable specification.
Laboratory Applications
1. Phosphate Buffer Preparation
Potassium Dihydrogen Phosphate is commonly used to prepare phosphate buffer solutions, often in combination with disodium hydrogen phosphate. The final buffer pH depends on the proportions of the salts, solution concentration, and temperature.
2. Analytical Chemistry
It is used as a reagent in suitable analytical procedures where potassium dihydrogen phosphate is specified. Laboratories should follow the method requirements and confirm that the reagent grade is appropriate for the intended analysis.
3. Research and Development
Research laboratories may use this compound in experimental procedures involving phosphate chemistry, solution preparation, and biochemical investigations.
4. Educational Laboratories
Universities, colleges, and scientific training facilities may use Potassium Dihydrogen Phosphate for chemistry practicals and laboratory demonstrations when the relevant procedure calls for it.
5. Quality Control Laboratories
Industrial and analytical laboratories may require this reagent for routine testing, sample preparation, and other validated procedures.
Storage and Handling
Store Potassium Dihydrogen Phosphate in a tightly closed container under the manufacturer’s recommended conditions. Keep the product protected from contamination and moisture, and use clean laboratory equipment when handling it.
Always consult the current Safety Data Sheet (SDS) for personal protective equipment, first-aid measures, spill management, and disposal instructions. Avoid creating or inhaling dust, and follow your laboratory’s chemical handling procedures. Dispose of unused material and solutions in accordance with applicable regulations and institutional requirements.
Why Choose Bright Scientific?
M/S Bright Scientific Co. supplies laboratory chemicals, scientific instruments, and research consumables to customers throughout Bangladesh. Potassium Dihydrogen Phosphate 500G can be requested for suitable analytical and laboratory applications.
For current pricing and availability, contact Bright Scientific and mention the product name, 500G pack size, and product number 104873. Confirm the brand, grade, packaging, and current batch documentation before placing an order.

Frequently Asked Questions (FAQ)
1. What is Potassium Dihydrogen Phosphate?
It is an inorganic phosphate salt with the chemical formula KH₂PO₄, commonly used in laboratories for buffer preparation and analytical procedures.
2. What is the CAS number?
The CAS number is 7778-77-0.
3. What is the molecular weight?
Its molecular weight is 136.09 g/mol.
4. What is the pack size of this product?
This product listing is for 500G.
5. What is EMSURE® ISO grade?
EMSURE® ISO is a designation used for analytical reagent products. Consult the manufacturer’s specifications to verify the quality requirements relevant to your application.
6. Can it be used to prepare phosphate buffers?
Yes. It is commonly used with other phosphate salts to prepare buffer solutions. The formulation and pH should follow the intended laboratory method.
7. How should Potassium Dihydrogen Phosphate be stored?
Keep it in a tightly closed, properly labelled container and follow the manufacturer’s storage and handling instructions.
8. Where can I buy Potassium Dihydrogen Phosphate 500G in Bangladesh?
Contact M/S Bright Scientific Co. for current price, availability, and quotation details.
Important: Laboratory Use Only. No other use. Always follow the manufacturer’s product documentation, SDS, and applicable laboratory procedures.






Reviews
There are no reviews yet.