Description
Specifications Table
Product Name – Potassium persulfate LR
Quantity/Pack Size – 500 g
Form – Crystalline powder
Grade – LR (Laboratory Reagent)
Application – Oxidizing agent, polymerization initiator, PCB etching
Product Overview
Potassium persulfate LR is a highly effective, water-soluble oxidizing agent widely used in laboratory and industrial processes. This crystalline powder offers exceptional stability and reactivity, making it a preferred choice for applications requiring controlled oxidation. Its LR (Laboratory Reagent) grade ensures consistent purity and performance, meeting stringent quality standards for reliable results. The compound’s strong oxidizing properties stem from its ability to generate sulfate radicals upon decomposition, facilitating polymerization reactions, metal surface treatments, and analytical procedures. Unlike organic peroxides, potassium persulfate provides a safer, more stable alternative for initiating free-radical reactions without requiring refrigeration. Its versatility extends to environmental testing, where it serves as a key reagent in chemical oxygen demand (COD) analysis. The product’s high solubility in water (50 g/100 mL at 20°C) enables easy preparation of solutions across various concentrations. Each batch undergoes rigorous quality control to maintain low levels of impurities, ensuring reproducibility in sensitive applications. The 500 g packaging provides an optimal balance between bulk efficiency and laboratory-scale convenience, minimizing waste while supporting frequent use.
FAQs
1. What is the shelf life of potassium persulfate LR when stored properly?
When stored in a cool, dry place away from direct sunlight and moisture, unopened potassium persulfate LR maintains its potency for approximately 12-18 months from the date of manufacture. Always check the expiration date on the packaging for specific guidance.
2. Can this product be used as a substitute for ammonium persulfate in polymerization?
Yes, potassium persulfate can replace ammonium persulfate in many polymerization applications, though the reaction kinetics may differ slightly. Potassium persulfate generally provides more stable free radicals at higher temperatures, which can be advantageous for certain polymer systems.
3. What safety precautions should be taken when handling this chemical?
Always wear appropriate personal protective equipment including gloves, safety goggles, and a lab coat. Work in a well-ventilated area or fume hood, as the compound can release oxygen gas when decomposing. Avoid contact with organic materials, reducing agents, and metals to prevent violent reactions.
4. How does the LR grade differ from AR or technical grades?
LR (Laboratory Reagent) grade offers higher purity than technical grade but is slightly less pure than AR (Analytical Reagent) grade. It’s suitable for general laboratory use where ultra-high purity isn’t critical, providing a cost-effective balance between quality and performance for most applications.
5. What’s the recommended storage temperature for maintaining stability?
For optimal stability, store potassium persulfate LR at temperatures between 15-25°C. Avoid temperature fluctuations and never store above 30°C, as elevated temperatures can accelerate decomposition and reduce the product’s effective shelf life.
