Description
Specifications Table
Product Name – Ammonium peroxydisulfate, 98%
Quantity/Pack Size – 500g, 1000g, 5000g
Form – Crystalline powder
Grade – Laboratory reagent grade
Application – Oxidizing agent, polymerization initiator, PCB etching
Product Overview
Ammonium peroxydisulfate (APS) is a highly pure, crystalline oxidizing agent with a minimum assay of 98%, making it a reliable choice for demanding laboratory applications. This water-soluble compound decomposes to release oxygen, serving as an efficient initiator for free-radical polymerization in synthetic rubber and plastics production. Its strong oxidizing properties also make it valuable in analytical chemistry for redox titrations and as an etching agent in printed circuit board (PCB) fabrication. The reagent remains stable under normal storage conditions but should be handled with care due to its potential to accelerate combustion. Its high solubility in water (580 g/L at 20°C) ensures easy preparation of solutions, while its compatibility with most inorganic acids and bases expands its utility across various protocols. This laboratory-grade APS is rigorously tested to meet strict purity standards, ensuring consistent performance in critical applications where impurities could compromise results.
FAQs
1. What is the shelf life of ammonium peroxydisulfate when stored properly?
When kept in a tightly sealed container away from moisture and heat, ammonium peroxydisulfate maintains its potency for up to 24 months from the date of manufacture. Degradation accelerates if exposed to humidity or temperatures above 30°C.
2. Can this reagent be used as a substitute for potassium persulfate?
Yes, ammonium peroxydisulfate can often replace potassium persulfate in polymerization and etching applications, though slight adjustments to concentration or reaction conditions may be needed due to differences in solubility and decomposition rates.
3. What precautions should be taken when dissolving ammonium peroxydisulfate in water?
Always add the powder slowly to cold water while stirring to prevent localized overheating. The dissolution process is exothermic, and rapid addition can cause splattering or thermal decomposition.
4. Is this product compatible with organic solvents like acetone or ethanol?
The reagent is primarily soluble in water and has limited solubility in most organic solvents. For applications requiring organic media, alternative oxidizing agents may be more suitable.
5. How does the purity of this grade compare to technical-grade ammonium peroxydisulfate?
This 98% laboratory-grade product undergoes additional purification steps to remove metallic impurities and residual salts, resulting in higher consistency and fewer side reactions compared to technical-grade versions (typically 90-95% pure).
