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Q where to purchase sodium hydroxide
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RoyReade Release Time: June 24, 2024, 5:57 AM
Removing silver thin film depends on the substrate and application. For glass or silicon substrates, you can use an etchant like nitric acid or potassium iodide solution. First, wear protective equipment. Apply the etchant to the silver film; it reacts chemically to dissolve the silver. Nitric acid is fast-acting but can damage some substrates, while potassium iodide is gentler but slower. Always neutralize and dispose of chemicals properly. For non-chemical removal, physical methods like abrasion or laser ablation are options, though they risk damaging the substrate if not done carefully.
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Q chemical analysis of caustic soda
BobSteele
GuyLancelot Release Time: April 16, 2024, 7:53 AM
Caustic soda, also known as sodium hydroxide (NaOH), is a critical industrial chemical used in various applications including paper making, detergent manufacturing, and water treatment. Chemically analyzing caustic soda involves determining its purity and concentration. The most commonly employed methods include titration with a standard acid, such as hydrochloric acid (HCl), which accurately indicates the NaOH concentration through neutralization reaction measurement. Other methods involve using pH meters or conductivity meters that correlate the solution’s properties with its NaOH content. The quality of caustic soda is crucial as impurities can significantly affect its performance in industrial processes. Therefore, careful analysis is necessary to ensure it meets the required specifications. Modern analytical techniques like spectrophotometry and atomic absorption spectroscopy can also be employed for more detailed impurity profiling.
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