Description
Specifications Table
Product Name – Ammonium acetate LR
Quantity/Pack Size – 500 g
Form – Crystalline powder
Grade – LR (Laboratory Reagent)
Application – Buffer preparation, protein crystallization, analytical chemistry
Product Overview
Ammonium acetate LR is a high-purity, laboratory-grade chemical compound widely used in analytical and biochemical applications. This crystalline powder offers excellent solubility in water, making it ideal for preparing buffer solutions, particularly in HPLC and mass spectrometry. Its neutral pH and low ionic strength minimize interference in sensitive assays, ensuring reliable and reproducible results. The LR grade designation guarantees stringent quality control, with minimal impurities that could affect experimental outcomes. This compound is particularly valued in protein crystallization studies due to its ability to stabilize proteins without denaturation. The 500 g pack size provides an optimal balance between cost-efficiency and freshness, as ammonium acetate can absorb moisture over time. Store in a cool, dry place in a tightly sealed container to maintain its stability and prevent decomposition into ammonia and acetic acid. Regular recalibration of solutions is recommended for critical applications, as the compound may gradually lose ammonia content upon prolonged storage.
FAQs
1. What is the shelf life of ammonium acetate LR when stored properly?
When stored in a tightly sealed container away from moisture and heat, ammonium acetate LR maintains its stability for approximately 2 years from the date of manufacture. However, periodic verification of pH and concentration is advised for critical applications.
2. Can this compound be used for preparing mobile phases in HPLC?
Yes, ammonium acetate LR is commonly used in HPLC mobile phases, particularly for LC-MS applications. Its volatility allows for easy removal during ionization, reducing background noise in mass spectrometry.
3. What precautions should be taken when handling ammonium acetate?
While generally low in toxicity, ammonium acetate should be handled in a well-ventilated area as it may release ammonia fumes. Use standard laboratory protection including gloves and goggles, and avoid inhalation of dust.
4. How does LR grade differ from AR grade ammonium acetate?
LR (Laboratory Reagent) grade contains slightly higher impurity levels compared to AR (Analytical Reagent) grade, making it suitable for general laboratory use rather than highly sensitive analytical procedures requiring ultra-high purity.
5. What alternatives exist for ammonium acetate in buffer preparation?
Ammonium formate or ammonium bicarbonate can serve as alternatives in certain applications, though they offer different pH ranges and volatility profiles. The choice depends on specific experimental requirements and compatibility with detection methods.
