Description
Specifications Table
Product Name – Potassium phosphate monobasic (potassium dihydrogen phosphate), anhydrous
Quantity/Pack Size – 500 g
Form – Crystalline powder
Grade – HPLC
Application – Buffer preparation, chromatography, molecular biology
Product Overview
Potassium phosphate monobasic (KH₂PO₄), in its anhydrous HPLC-grade form, is a highly purified crystalline powder designed for demanding laboratory applications where precision and consistency are critical. This reagent-grade chemical offers exceptional solubility in water, making it ideal for preparing phosphate buffers with exact pH control. Its HPLC certification guarantees minimal trace metal contaminants and organic impurities, ensuring reliable performance in high-sensitivity analytical techniques. The anhydrous nature of this compound eliminates hydration-related variability, providing researchers with batch-to-batch reproducibility. Its neutral pH in solution and high buffering capacity make it particularly valuable for maintaining stable conditions in biochemical assays. The product is packaged in airtight containers to prevent moisture absorption and contamination, preserving its high purity throughout storage. This grade is specifically manufactured to meet the stringent requirements of chromatographic applications, where even minor impurities could compromise separation efficiency or detector sensitivity. The fine particle size distribution ensures rapid dissolution without residue, while the carefully controlled manufacturing process minimizes lot-to-lot variation.
FAQs
1. What is the difference between anhydrous and monohydrate forms of potassium phosphate monobasic?
The anhydrous form contains no water molecules in its crystal structure, offering higher purity by weight and eliminating potential variability from hydration levels. This makes it particularly suitable for applications requiring precise concentration calculations.
2. Can this product be used for preparing phosphate-buffered saline (PBS) solutions?
While chemically suitable, this HPLC-grade version is typically over-qualified for standard PBS preparation. The high purity makes it ideal when ultra-low impurity levels are required in the final buffer solution.
3. What is the typical shelf life of this anhydrous potassium phosphate monobasic?
When stored in its original, unopened container at room temperature, this product maintains its specified purity for at least 3 years from the date of manufacture.
4. How does the HPLC grade differ from ACS or reagent grades?
HPLC grade undergoes additional purification steps to remove trace organics and metals that could interfere with chromatographic separations, resulting in lower UV absorbance and fewer potential column contaminants.
5. What precautions should be taken when handling this chemical?
While generally low in toxicity, standard laboratory practices should be followed including wearing gloves and safety glasses, working in a well-ventilated area, and avoiding inhalation of dust particles.
