Description
Specifications Table
Product Name – Ammonium phosphate, dibasic, crystal BAKER ANALYZED™ ACS reagent
Quantity/Pack Size – 500 g
Form – Crystalline powder
Grade – ACS reagent
Application – Analytical chemistry, buffer solutions, precipitation reactions
Product Overview
Ammonium phosphate dibasic (diammonium hydrogen phosphate) from BAKER ANALYZED™ is an ACS reagent-grade chemical designed for high-precision laboratory applications. This crystalline form offers exceptional purity, meeting the stringent American Chemical Society (ACS) specifications for analytical reliability. The compound’s balanced pH properties make it particularly useful in buffer preparation, where consistent hydrogen ion concentration is critical. Its high solubility in water (570 g/L at 20°C) ensures rapid dissolution without residue, while the crystalline structure provides stability during storage and handling. The ACS grade certification guarantees minimal impurities, with heavy metals content strictly controlled below 0.001%, ensuring interference-free results in sensitive assays. The product’s hygroscopic nature requires proper sealing to maintain its integrity, though this property also contributes to its effectiveness in moisture-sensitive reactions. As a dibasic salt, it serves as an excellent source of both ammonium and phosphate ions, making it versatile for various chemical synthesis pathways. The 500g packaging provides an optimal balance between bulk efficiency and freshness preservation for frequent lab use.
FAQs
1. What is the exact chemical formula of this ammonium phosphate dibasic?
(NH₄)₂HPO₄ is the chemical formula, representing diammonium hydrogen phosphate with a molar mass of 132.06 g/mol.
2. How does this compare to monobasic ammonium phosphate?
Dibasic ammonium phosphate has two replaceable hydrogen atoms in its phosphate group (pH ~8 in solution) compared to monobasic’s one (pH ~4.5), making it more alkaline and suitable for different buffering ranges.
3. Can this be used for preparing phosphate-buffered saline solutions?
While possible, it requires precise pH adjustment with monobasic phosphate or acid, as dibasic alone will yield a more alkaline solution than standard PBS (pH 7.4).
4. What’s the typical shelf life when stored properly?
When kept in a tightly sealed container at room temperature away from moisture, the product maintains its specified purity for at least 3 years from manufacture date.
5. Are there any special disposal requirements for this chemical?
As a phosphate compound, it should be neutralized if necessary and disposed of according to local environmental regulations for inorganic salts, avoiding direct release into water systems.
